Page

Mission Statement..................................................................................2

Company Overview ...............................................................................3

General Information ...........................................................................4-5

Thermistor Markets and Applications ................................................6-7

Terminology........................................................................................8-9

Ultra Precision Interchangeable Thermistors .......................................10

Standard Precision Interchangeable Thermistors..................................11

Precision Interchangeable Thermistors.................................................12

DO-35 Standard Glass Encapsulated Thermistors...............................13

DO-35 Interchangeable Glass Encapsulated Thermistors....................14

DO-41 Standard Glass Encapsulated Thermistors...............................15

Standard Leaded Epoxy Coated Thermistors .......................................16

Miniature Leaded Epoxy Coated Thermistors .....................................17

“MELF” Style LL-34 Thermistors .......................................................18

“MELF” Style LL-31/LL-41 Thermistors ............................................19

Surface Mount End-Banded Chip Thermistors ...................................20

Leadless Chip Thermistors ...................................................................21

Inrush Current Limiting Power Thermistors .......................................22

Thin Film Platinum RTD’s..................................................................23

Calibrated Thermistor Probes ..............................................................24

Thermistor and RTD Probe Assemblies .........................................25-38

Precision Interchangeable Thermistor Tables ..................................40-43

Resistance-Temperature Conversion Tables ....................................44-45

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

Table of Contents

2

O

ur mission is “Total Quality Commitment” by continuing to build:

A partnership with our employees

by promoting team effort, communication

and empowering them to do their best, and by creating an outstanding work

environment through innovative SPC concepts and methods which, by our company’s 

success, fosters self-advancement.

A partnership with our customers and sales representatives

by providing

expert engineering and sales support as well as on-time delivery of thermistors, 

probes and assemblies which exceed their quality and performance requirements.

A partnership with our vendors

by clearly communicating our high 

expectations of service and product quality thereby insuring our ability to provide 

the same to our customers.

A partnership with our community

by providing employment opportunities

and by being responsive to important civic issues.

“Our goal is to be the best thermistor manufacturer in the world with a strong 

commitment to meeting or exceeding customer requirements, and continually

improving the effectiveness of the quality management system.

–U.S. Sensor Corp.

Mission Statement

U.S. Sensor Corp.

U.S. Sensor is a world class manufacturer of an extensive variety of the highest quality

thermistors as well as thermistor probes and assemblies. The company’s products include

NTC and PTC thermistors which are produced using proprietary state of the art processing

techniques. Customers worldwide use U.S. Sensor thermistors in their most demanding

applications.

Leading Edge Technology

To assure that U.S. Sensor maintains its competitive position in the marketplace and contin-

ues to provide products which exceed its customers specified requirements, the company

continues to make substantial investments in the most advanced component manufacturing

equipment as well as in research and development of innovative products and manufacturing

processes.

Products Designed From The Ground Up

U.S. Sensor manufactures thermistors by preparing precise formu-

lations of powdered transition metal oxides “doped” with stabiliz-

ing agents. These compounds are combined with binder materials

and processed using proprietary techniques resulting in superior

quality components and assemblies.

Application Engineering

U.S. Sensor’s application engineering personnel are highly trained professionals who will assist

you to select a standard thermistor or RTD, or design a special device for your

most exacting requirement. Whether your application requires a simple compo-

nent, a probe assembly or a complex network which will exhibit non-standard

resistance temperature characteristics particularly suited to your requirements, our

application engineering personnel will be most helpful. U.S. Sensor personnel

have been designing unique devices for the most demanding applications for

more than thirty years.

Quality

SPC (statistical process control) techniques are used throughout the manufacturing

processes in an endless loop of quality improvement. Total Quality Management is our

pledge.

Company Overview

3

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

4

NTC and PTC Thermistors

Definition

Thermistors are thermally sensitive resistors whose prime function is to exhibit a large,
predictable and precise change in electrical resistance when subjected to a corresponding change
in body temperature. Negative Temperature Coefficient (NTC) thermistors exhibit a decrease in
electrical resistance when subjected to an increase in body temperature and Positive Temperature
Coefficient (PTC) thermistors exhibit an increase in electrical resistance when subjected to an
increase in body temperature. U.S. Sensor produces thermistors capable of operating over the
temperature range of -100˚ to over +600˚F. Because of their very predictable characteristics and
their excellent long term stability, thermistors are generally accepted to be the most advantageous
sensor for many applications including temperature measurement and control.

Since the negative temperature coefficient of silver sulphide was first observed by Michael
Faraday in 1833, there has been a continual improvement in thermistor technology. The most
important characteristic of a thermistor is, without question, its extremely high temperature 
coefficient of resistance. Modern thermistor technology results in the production of devices with
extremely precise resistance versus temperature characteristics, making them the most
advantageous sensor for a wide variety of applications. 

A thermistor’s change in electrical resistance due to a corresponding temperature change is evident
whether the thermistor’s body temperature is changed as a result of conduction or radiation from
the surrounding environment or due to “self heating” brought about by power dissipation within
the device. 

When a thermistor is used in a circuit where the power dissipated within the device is not 
sufficient to cause “self heating”, the thermistor’s body temperature will follow that of the 
environment. Thermistors are not “self heated” for use in applications such as temperature 
measurement, temperature control or temperature compensation.

When a thermistor is used in a circuit where the power dissipated within the device is sufficient
to cause “self heating”, the thermistor’s body temperature will be dependent upon the thermal
conductivity of its environment as well as its temperature. Thermistors are “self heated” for use in
applications such as liquid level detection, air flow detection and thermal conductivity measurement.

Manufacturing Processes

U.S. Sensor manufactures thermistors using sophisticated state of the art processing techniques.
Their excellent long term stability coupled with precision interchangeability and low cost makes
them ideally suited for temperature sensing applications. The devices are available in a wide 
variety of styles designed to suit countless circuit requirements. 

NTC Manufacturing Processes

NTC thermistors are manufactured using homogeneous compounds of various metal oxides
including Manganese, Nickel, Cobalt and Copper. The powdered metal oxides, along with 
stabilizing agents and organic binders, are combined into exact formulations which will exhibit
certain electrical characteristics upon completion of the manufacturing processes. Dependent
upon the particular application for which the devices are to be used, the oxide/binder
formulation is formed into any number of shapes including chips, discs, wafers and bars. 

General Information

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

5

Chips

Precision interchangeable thermistors used for temperature measurement and
control as well as glass encapsulated and surface mount devices typically
utilize a small chip thermistor sensing element. A slurry, consisting of the
metal oxide compounds and special organic binders, is “cast” onto a flat sur-
face to exacting dimensions. The thickness of the “cast tape” can be as thin as
0.001" or as thick as 0.050" depending upon the application. The “cast tape”
ware is “blanked” into wafers or substrates of a suitable size. The “green”
wafers are sintered at high temperature and electroded with silver or other
electrode materials.

The electroded wafers are diced into the exact size dictated by the particular application. A typical
wafer will yield from 2,000 to 20,000 devices depending upon the size of the chips required.

The chips are tested electrically, lead wires are attached, resistance trimming is performed if neces-
sary and an encapsulant is applied. In some applications the “unleaded” bare chip can be used “as
is”. Chips can also be encapsulated in a hermetically sealed (DO-35 or DO-41) style leaded glass
package or into a “MELF” style surface mount package.

Discs

For production of large disc thermistors as well as power thermistors, those devices used
primarily for inrush current limiting in switching mode power supplies, discs ranging in size
from 0.200" diameter to over 1.000" diameter are formed from the oxide/binder formulation
using a tableting press. Precise quantities of powder are automatically metered into a die cavity
and compacted into a shape which conforms to the specified dimensional characteristics. This
process results in uniform density throughout the device as well as uniform electrical characteris-
tics throughout the production run. The “green” discs are then subjected to a high temperature
sintering process which will result in the device achieving the desired resistance versus tempera-
ture characteristics. The “sintered” discs are then metallized. A thick film silver electrode materi-
al is applied to the “flats” of the discs and fired to allow for subsequent electrical contact to the
device. Testing of the thermistor’s electrical characteristics is performed to confirm that the
devices conform to the desired resistance versus temperature characteristic. Lead wires are
attached using specially formulated solder and an encapsulant of epoxy or silicone resin is usually
applied to the device for environmental protection.

Silicon PTC Manufacturing Processes

Silicon PTC thermistors are manufactured using the positive temperature coefficient of
specially doped single crystal silicon. The ingot is grown and doped to precise specifications
and sliced into thin wafers. An electrode is applied to the flat surfaces of the wafers which are
subsequently diced into small chips. The chips are then sealed in DO-35 (Diode Style) or
LL-34 (Surface Mount) packages and electrically tested to confirm that they meet their
specified resistance temperature characteristics.

Probes And Assemblies

Most of the standard thermistors and RTD’s listed in the U.S. Sensor catalog are available
mounted in special probe housings designed for sensing temperature under the most demand-
ing environmental conditions. U.S. Sensor’s standard probe housings range in size from less
than 0.020" diameter to over 0.375" diameter and are constructed from various materials
including stainless steel, aluminum, epoxy, polyimide and PVC, just to name a few. Detailed
descriptions of some of U.S. Sensor’s standard probe housings are presented in this catalog.

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

Consumer Electronics

Air conditioners

Audio amplifiers

Cellular telephones

Clothes dryers

Computer power supplies

Dishwashers

Electric blanket controls
Electric water heaters
Electronic thermometers
Fire detectors
Home weather stations
Oven temperature controls
Pool and spa controls
Rechargeable battery packs

Refrigerator and freezer temperature controls

Small appliance controls

Solar collector controls

Thermostats

Toasters

Washing machines

Automotive

Audio amplifiers

Automatic climate controls

Coolant sensors

Electric coolant fan temperature controls

Emission controls

Engine block temperature sensors

Engine oil temperature sensors

Intake air temperature sensors

Oil level sensors

Outside air temperature sensors

Transmission oil temperature sensors

Water level sensors

Medical Electronics

Blood analysis equipment

Blood dialysis equipment

Blood oxygenator equipment

Clinical fever thermometers

Esophageal tubes

Infant incubators

Internal body temperature monitors

Internal temperature sensors

Intravenous injection temperature regulators

Myocardial probes

Respiration rate measurement equipment

Skin temperature monitors

Thermodilution catheter probes

Thermistor Markets and Applications

6

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

Industrial Electronics

Commercial vending machines

Crystal ovens

Fluid flow measurement

Gas flow indicators

HVAC equipment

Industrial process controls

Liquid level indicators

Microwave power measurement

Photographic processing equipment

Plastic laminating equipment

Solar energy equipment

Thermal conductivity measurement (diamond testers etc.)

Thermocouple compensation

Thermoplastic molding equipment

Thermostats

Water purification equipment

Welding equipment

Military And Aerospace

Aircraft temperature

Bathythermography

Fire control equipment

Missiles and spacecraft temperature

Oscillator compensation

Physiological monitoring

Satellites

Food Handling And Processing

Coffee makers

Deep fryers

Fast food processing

Perishable shipping

Temperature controlled food storage systems

Thermometers for use in food preparation

Communication And Instrumentation

Amplifier over temperature sensing

Cellular telephones

Copper coil winding temperature compensation

Oscillator temperature compensation

Rechargeable battery packs

Transistor gain stabilization

Transistor temperature compensation

Computer

Power supplies (inrush current limiting)

Uninterruptible power supplies 

(over temperature sensing)

7

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

Zero-Power Resistance (R

T

)

The zero-power resistance is the dc resistance value of a thermistor measured at a specified 
temperature with power dissipated by the thermistor low enough that any further decrease in
power will result in not more than 0.1 % (or one-tenth of the specified measurement tolerance,
whichever is smaller) change in resistance.

Resistance Ratio Characteristic

The resistance ratio characteristic identifies the ratio of the zero-power resistance of a thermistor
measured at 25˚C to that resistance measured at 125˚C.

Zero-Power Temperature Coefficient Of Resistance (alpha 

T

) 

Zero-power coefficient of resistance is the ratio at the specified temperature (T) of the rate of
change of zero-power resistance with temperature to the zero-power resistance of the thermistor.

Negative Temperature Coefficient (NTC)

An NTC thermistor is one in which the zero-power resistance decreases with an increase in
body temperature.

Positive Temperature Coefficient (PTC)

A PTC thermistor is one in which the zero-power resistance increases with an increase in 
body temperature.

Maximum Operating Temperature

The maximum operating temperature of a thermistor is the maximum body temperature at
which the thermistor will operate for an extended period of time with acceptable stability of
its characteristics. This temperature can be the result of internal or external heating, or both,
and should not exceed the maximum value specified.

Maximum Power Rating

The maximum power rating of a thermistor is the maximum power which a thermistor will
dissipate for an extended period of time with acceptable stability of its characteristics.

Dissipation Constant 

The dissipation constant is the ratio, (expressed in milliwatts per degree C) at a specified
ambient temperature, of a change in power dissipation in a thermistor to the resultant body
temperature change.

Thermal Time Constant

The thermal time constant is the time required for a thermistor to change 63.2 % of the total
difference between its initial and final body temperature when subjected to a step function
change in temperature under zero-power conditions.

T

=

1

___

R

T

(D R

T

)

______

(D T)

Terminology

8

U.S. Sensor’s ultra precision interchangeable thermistors are highly

accurate, stable devices designed specifically for temperature sensing

and control applications. They are particularly suited for uses where

their precision interchangeability eliminates the necessity for costly

individual circuit calibration.

Features

• High accuracy

• Epoxy encapsulated

• Fast thermal response

• High stability

• Long life

• Small size

• R/T Curve-matched

Options

• Special lead materials and lengths
• Special encapsulants or probe housings
• Non-standard resistance values and tolerances

Specifications

• Thermal time constant: 1 second max. in a well

stirred oil bath, 10 seconds max. in still air

• Dissipation constant: 1 mW/˚C
• Maximum power rating: 30 mW at 25˚C derated to 1 mW at 125˚C
• Interchangeability tolerance of ±0.05˚C from 0-50˚C
• Operating temperature:  -55˚C to +80˚C
• Storage and operation temperatures for best long term stability:  -55˚

to +50˚C

10

PR222J2

2252

J

3890

PR302J2

3000

J

3890

PR502J2

5000

J

3890

PR103J2

10000

J

3890

PR203J2

20000

J

3890

PR303J2

30000

J

3890

PR503J2

50000

J

3890

Ultra Precision Interchangeable Thermistors

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 40-43)

Beta (˚K)

0-50˚C

1.5"
MIN

EPOXY
COATING

30 AWG (0.010")
TINNED ALLOY WIRE

0.095"

MAX

Part Number

(±0.05˚C 0-50˚C)

Precision Interchangeable Thermistors

0.05ºC Accuracy

Ultra

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s standard precision interchangeable thermistors are low cost,

highly accurate, stable devices designed specifically for temperature sens-

ing and control applications. They are particularly suited for uses where

their precision interchangeability eliminates the necessity for costly

individual circuit calibration.

Features

• High accuracy

• Epoxy encapsulated

• Fast thermal response

• High stability

• Low cost

• Long life

• Small size

• R/T Curve-matched

Options

• Special lead materials and lengths
• Special encapsulants or probe housings
• Non-standard resistance values and tolerances

Specifications

• Thermal time constant: 1 second max. in a well stirred oil bath, 10

seconds max. in still air

• Dissipation constant: 1 mW/˚C
• Maximum power rating: 30 mW at 25˚C derated to 1 mW at 125˚C
• Interchangeability tolerance of ±0.1˚C or ±0.2˚C from 0-70˚C
• Operating temperature: PS and PT series -80˚C to +150˚C, KS and KT

series -80˚C to +135˚C

• Storage and operation temperatures for best long term stability: 

KT and PT series = -80˚ to +120˚C, KS and PS series = -80˚ to +75˚C

11

Insulated Leads Insulated Leads

Bare Leads

Bare Leads

KS102J2

KT102J2

PS102J2

PT102J2

1000

*

J

3890

KS222J2

KT222J2

PS222J2

PT222J2

2252

J

3890

KS302J2

KT302J2

PS302J2

PT302J2

3000

J

3890

KS502J2

KT502J2

PS502J2

PT502J2

5000

J

3890

KS602J2

KT602J2

PS602J2

PT602J2

6000

J

3890

KS103G2

KT103G2

PS103G2

PT103G2

10000

G

3575

KS103J2

KT103J2

PS103J2

PT103J2

10000

J

3890

KS203J2

KT203J2

PS203J2

PT203J2

20000

J

3890

KS303J2

KT303J2

PS303J2

PT303J2

30000

J

3890

KS503J2

KT503J2

PS503J2

PT503J2

50000

J

3890

KS503R2

KT503R2

PS503R2

PT503R2

50000

R

4140

KS104R2

KT104R2

PS104R2

PT104R2

100000

R

4140

*0.125" maximum diameter over epoxy coating

Standard Precision Interchangeable Thermistors

Part Number

(±0.1˚C 0-70˚C)

Part Number

(±0.2˚C 0-70˚C)

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 40-43)

Beta (˚K)

0-50˚C

1.5"
MIN

EPOXY
COATING

30 AWG (0.010")
TINNED ALLOY WIRE

0.095"

MAX

“PS” & “PT” SERIES

Part Number

(±0.1˚C 0-70˚C)

Part Number

(±0.2˚C 0-70˚C)

Precision Interchangeable Thermistors

0.1ºC and 0.2ºC Accuracy

Standard

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

0.250"
NOM

1.5"  

±

 .250"

EPOXY
COATING

30 AWG (0.010") KYNAR 
INSULATED WIRE

0.095"

MAX

“KS” & “KT” SERIES

“PS” & “PT” SERIES

“KS” & “KT” SERIES

Interchangeable Thermistors

U.S. Sensor’s precision interchangeable thermistors are low cost, highly

accurate, stable devices designed specifically for temperature sensing and

control applications. They are particularly suited for uses where their pre-

cision interchangeability eliminates the necessity for costly individual cir-

cuit calibration.

Features

• High accuracy

• Epoxy encapsulated

• Fast thermal response

• High stability

• Low cost

• Long life

• Small size

• R/T Curve-matched

Options

• Special lead materials and lengths
• Special encapsulants or probe housings
• Non-standard resistance values and tolerances

Specifications

• Thermal time constant: 1 second max. in a well stirred oil bath, 10

seconds max. in still air

• Dissipation constant: 1 mW/˚C
• Maximum power rating: 30 mW at 25˚C derated to 1 mW at 125˚C
• Interchangeability tolerance of ±0.5˚C or ±1.0˚C from 0-70˚C
• Operating temperature: KW and KX series -80˚C to +135˚C, PW and

PX series -80˚C to +150˚C

• Storage and operation temperatures for best long term stability:  -80˚C to

+120˚C

12

Insulated Leads Insulated Leads

Bare Leads

Bare Leads

KW102J2

KX102J2

PW102J2

PX102J2

1000

*

J

3890

KW222J2

KX222J2

PW222J2

PX222J2

2252

J

3890

KW302J2

KX302J2

PW302J2

PX302J2

3000

J

3890

KW502J2

KX502J2

PW502J2

PX502J2

5000

J

3890

KW602J2

KX602J2

PW602J2

PX602J2

6000

J

3890

KW103G2

KX103G2

PW103G2

PX103G2

10000

G

3575

KW103J2

KX103J2

PW103J2

PX103J2

10000

J

3890

KW203J2

KX203J2

PW203J2

PX203J2

20000

J

3890

KW303J2

KX303J2

PW303J2

PX303J2

30000

J

3890

KW503J2

KX503J2

PW503J2

PX503J2

50000

J

3890

KW503R2

KX503R2

PW503R2

PX503R2

50000

R

4140

KW104R2

KX104R2

PW104R2

PX104R2

100000

R

4140

*0.125" maximum diameter over epoxy coating

Precision Interchangeable Thermistors

Part Number

(±0.5˚C 0-70˚C)

Part Number

(±1.0˚C 0-70˚C)

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 40-43)

Beta (˚K)

0-50˚C

1.5"
MIN

EPOXY
COATING

30 AWG (0.010")
TINNED ALLOY WIRE

0.095"

MAX

“PW” & “PX” SERIES

0.5ºC and 1.0ºC Accuracy

Part Number

(±0.5˚C 0-70˚C)

Part Number

(±1.0˚C 0-70˚C)

Precision

1832 West Collins Avenue, Orange, CA 92867 Tel. (714) 639-1000 • Fax (714) 639-1220

0.250"
NOM

1.5"  

±

  .250"

EPOXY
COATING

30 AWG (0.010") KYNAR 
INSULATED WIRE

0.095"

MAX

“KW” & “KX” SERIES

“PW” & “PX” SERIES

“KW” & “KX” SERIES

U.S. Sensor’s low cost glass encapsulated thermistors are manufactured

using super stable NTC chips which are hermetically sealed in a glass

(DO-35 diode style) package. The result is a device which exhibits

excellent long term reliability and stability even when subjected to

severe environmental or thermal conditions. Their uniform dimensions

and axial lead configuration make them especially suitable for use with

automatic insertion equipment.

Features

• High temperature capability to 300˚C
• Hermetically sealed glass package
• Low cost
• High stability
• High voltage insulation
• Tinned CCS lead wires are solderable or weldable

Options

• Special Lead Forms
• Non-standard resistance values and tolerances
• Point matched at specified temperatures
• Tape and reel packaging

Specifications

• Thermal time constant: 5 seconds (still air)
• Thermal time constant: 0.5 seconds (stirred liquid)
• Dissipation constant: 2 mW/˚C (still air)

0.160"

MAX

0.075" MAX

0.020"  

±

 0.002"

24 AWG TINNED CCS 
1.0" LONG MIN

GLASS BODY

252FG1K

2500

10

F

3420

502FG1K

5000

10

F

3420

822JG1K

8200

10

J

3890

103JG1K

10000

10

J

3890

123JG1K

12000

10

J

3890

203JG1K

20000

10

J

3890

253JG1K

25000

10

J

3890

303JG1K

30000

10

J

3890

503JG1K

50000

10

J

3890

753JG1K

75000

10

J

3890

104JG1K

100000

10

J

3890

254JG1K

250000

10

J

3890

504RG1K

500000

10

R

4140

105RG1K

1000000

10

R

4140

*Resistance tolerances of ± 1%, 2%, and 5% are available upon request

DO-35 Standard Glass Encapsulated Thermistors

Part

Number

Resistance

Ω

@ 25˚C

*Resistance

Tol. ± %

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

13

Glass Encapsulated Thermistors

DO-35 

Standard

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s low cost interchangeable glass encapsulated thermistors

are manufactured using super stable, precision NTC chips which are

hermetically sealed in a glass (DO-35 diode style) package. The result is

a device which exhibits excellent long term reliability and stability even

when subjected to severe environmental or thermal conditions. Their

uniform dimensions and axial lead configuration make them especially

suitable for use with automatic insertion equipment.

Features

• High temperature capability to 300˚C
• Hermetically sealed glass package
• Low cost
• High stability
• High voltage insulation
• Tinned CCS lead wires are solderable or weldable

Options

• Special Lead Forms
• Non-standard resistance values and tolerances
• Point matched at specified temperatures
• Tape and reel packaging

Specifications

• Thermal time constant: 5 seconds (still air)
• Thermal time constant: 0.5 seconds (stirred liquid)
• Dissipation constant: 2 mW/˚C (still air)

0.160"

MAX

0.075" MAX

0.020"  

±

 0.002"

24 AWG TINNED CCS 
1.0" LONG MIN

GLASS BODY

103JL1A

103JM1A

10000

J

3890

203JL1A

203JM1A

20000

J

3890

253JL1A

253JM1A

25000

J

3890

503JL1A

503JM1A

50000

J

3890

104JL1A

104JM1A

100000

J

3890

DO-35 Interchangeable

Glass Encapsulated Thermistors

Part Number

(± 0.5˚C 0-100˚C)

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

14

Glass Encapsulated Thermistors

DO-35 

Interchangeable

Part Number

(± 1.0˚C 0-100˚C)

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s low cost glass encapsulated thermistors are manufactured

using super stable NTC chips which are hermetically sealed in a glass

(DO-41 diode style) package. The result is a device which exhibits

excellent long term reliability and stability even when subjected to

severe environmental or thermal conditions. Their uniform dimensions

and axial lead configuration make them especially suitable for use with

automatic insertion equipment.

Features

• High temperature capability to 300˚C
• Hermetically sealed glass package
• Low cost
• High stability
• High voltage insulation
• Tinned CCS lead wires are solderable or weldable

Options

• Non-standard resistance values and tolerances
• Point matched at specified temperatures

Specifications

• Thermal time constant: 8 seconds max (still air)
• Thermal time constant: 2 seconds max (stirred liquid)
• Dissipation constant: 3 mW/˚C (still air)

0.170"

MAX

0.110" MAX

22 AWG (0.0256"  

±

  0.003" DIA)

TINNED CCS, 1.0" LONG MIN

GLASS BODY

102FH1K

1000

10

F

3420

222JH1K

2252

10

J

3890

302JH1K

3000

10

J

3890

502JH1K

5000

10

J

3890

DO-41 Standard

Glass Encapsulated Thermistors

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

15

Glass Encapsulated Thermistors

DO-41 

Standard 

Part

Number

Resistance

Tol. ± %

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

1.0"
MIN

EPOXY
COATING

24 AWG (0.020")
TINNED SOLDERABLE WIRE

0.125"

MAX

U.S. Sensor’s standard leaded epoxy coated thermistors are manufactured

using the same state of the art manufacturing techniques as those used

to produce U.S. Sensor’s precision interchangeable devices. This results

in devices with superior long term reliability characteristics, making

them especially suitable for temperature measurement, temperature con-

trol and temperature compensation applications.

Features

• Low cost
• High stability
• Small size
• Epoxy encapsulated
• Fast thermal response

Options

• Special lead materials and lengths
• Special encapsulants or probe housings
• Non-standard resistance values and tolerances
• Point matched at specified temperatures

Specifications

• Thermal time constant: 2 seconds max. in a 

well stirred oil bath, 15 seconds max. in still air

• Dissipation constant: 3 mW/˚C

DC101B2K

100

10

B

2930

100

DC102F2K

1000

10

F

3420

150

DC222J2K

2252

10

J

3890

150

DC302J2K

3000

10

J

3890

150

DC502J2K

5000

10

J

3890

150

DC103G2K

10000

10

G

3575

150

DC103J2K

10000

10

J

3890

150

DC203J2K

20000

10

J

3890

150

DC303J2K

30000

10

J

3890

150

DC503J2K

50000

10

J

3890

150

DC104R2K

100000

10

R

4140

150

*Resistance tolerances ± 1%, 2%, and 5% are available upon request

Standard Leaded Epoxy Coated Thermistors

Part

Number

Resistance

Ω

@ 25˚C

*Resistance

Tol. ± %

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

Max

Operating

Temp. ˚C

16

Leaded Epoxy Coated Thermistors

0.125” Maximum Body Diameter

Standard

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s miniature leaded epoxy coated thermistors are manufac-

tured using the same state of the art manufacturing techniques as those

used to produce U.S. Sensor’s precision interchangeable devices. This

results in devices with superior long term reliability characteristics

especially suitable for temperature measurement, temperature control

and temperature compensation applications.

Features

• Low cost
• High stability
• Epoxy encapsulated
• Small size
• Fast thermal response

Options

• Special lead materials and lengths
• Special encapsulants or probe housings
• Non-standard resistance values and tolerances
• Point matched at specified temperatures

Specifications

• Thermal time constant: 1 second max. in a 

well stirred oil bath, 10 seconds max. in still air

• Dissipation constant: 1 mW/˚C
• Max. operating temperature: LC series 150˚C, KC series 135˚C, TC

series 150˚C (R-T Curve “B” devices limited to 100˚C Max.)

17

0.250"
NOM

EPOXY
COATING

28 AWG (0.013") KYNAR 
INSULATED WIRE

0.095"

MAX

“KC” SERIES

1.5"  

±

  0.250"

Leaded Epoxy Coated Thermistors

0.095” Maximum Body Diameter

Miniature

Teflon

Kynar

Bare

Insulated Leads Insulated Leads

Leads

TC101B2K

KC101B2K

LC101B2K

100

10

B

2930

TC102F2K

KC102F2K

LC102F2K

1000

10

F

3420

TC222J2K

KC222J2K

LC222J2K

2252

10

J

3890

TC302J2K

KC302J2K

LC302J2K

3000

10

J

3890

TC502J2K

KC502J2K

LC502J2K

5000

10

J

3890

TC103G2K

KC103G2K

LC103G2K

10000

10

G

3575

TC103J2K

KC103J2K

LC103J2K

10000

10

J

3890

TC203J2K

KC203J2K

LC203J2K

20000

10

J

3890

TC303J2K

KC303J2K

LC303J2K

30000

10

J

3890

TC503J2K

KC503J2K

LC503J2K

50000

10

J

3890

TC104R2K

KC104R2K

LC104R2K

100000

10

R

4140

*Resistance tolerances of ±1%, 2% and 5% are available upon request 

Miniature Leaded Epoxy Coated Thermistors

Part

Number

Part

Number

Resistance

Ω

@ 25˚C

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

Part

Number

Resistance

Tol. ± %

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

1.5"
NOM

EPOXY
COATING

28 AWG (0.013")
TINNED SOLDERABLE WIRE

0.095"

MAX

“LC” SERIES

0.250"
NOM

EPOXY
COATING

28 AWG (0.013") TEFLON 
INSULATED WIRE

0.095"

MAX

“TC” SERIES

1.5"  

±

  0.250"

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

19

U.S. Sensor’s NTC LL-31 and LL-41 “MELF” style glass encapsulated

surface mount thermistors are manufactured using super stable NTC chips

which are hermetically sealed in a glass package. The result is an extremely

reliable surface mount package which is capable of withstanding the most

severe environmental conditions. Tape and reeling for use with automatic

insertion equipment is available.

Features

• Surface mountable
• Hermetically sealed glass package
• Low cost
• High stability
• Rated to 220˚C operating temperature

Options

• Non-standard resistance values and tolerances
• Point matched at specified temperatures
• Tape and reel packaging

Specifications

• Thermal time constant: LL-31 Series 5 seconds max,

LL-41 series 8 seconds max

• Dissipation constant: LL-31 series 1 mW/ºC,

LL-41 series 3 mW/ºC

GLASS BODY

“LL-31” SERIES

0.053"

NOM

0.075"

±

 0.008"

TINNED DUMET
CONTACT TABS

0.049"

±

 0.004"

MM302F1K

3000

10

F

3420

MM502F1K

5000

10

F

3420

MM103J1K

10000

10

J

3890

MM153J1K

15000

10

J

3890

MM203J1K

20000

10

J

3890

MM104R1K

100000

10

R

4140

Surface Mount “LL-31” MicroMELF Thermistors

Part

Number

Resistance

Ω

@ 25˚C

Resistance

Tol. ± %

R-T Curve

(See Pg. 44-45)

Beta (˚K)

0-50˚C

Surface Mount NTC Thermistors

LL-31 MicroMELF and LL-41 MELF

“MELF”

Style

Surface Mount “LL-41” MELF Thermistors

Part

Number

Resistance

Ω

@ 25˚C

Resistance

Tol. ± %

Beta (˚K)

0-50˚C

SB302J1K

3000

10

J

3890

SB502J1K

5000

10

J

3890

“LL-41” SERIES

GLASS BODY

0.096"

±

 0.008"

0.197"

±

 0.012"

0.016"

±

 0.005"

TINNED DUMET
CONTACT TABS

R-T Curve

(See Pg. 44-45)

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s surface mount end-banded thermistor elements are

designed for use on hybrid substrates, integrated circuits or printed 

circuit boards. They have a solder coated metallization which is suitable

for various contact techniques including wire bond, epoxy or solder.

Since they are manufactured using the most advanced equipment and

technology available, their dimensional parameters are extremely uniform

making the devices especially suitable for use with automatic handling

and placement equipment.

Features

• Surface mountable
• Small size
• Low cost
• Rated to 150˚C operating temperature

Options

• Non-standard resistance values and tolerances
• Special electrode materials
• Special dimensions
• Tape and reel packaging
• Solder coated metallization

Specifications

• Thermal time constant: 10 seconds max.
• Dissipation constant: 1 mW/˚C

20

0.120"

±

 0.010"

0.008"

MIN

0.050"

MAX

SOLDER COATED "LB-2000" LEACH
RESISTANT TERMINATIONS (TYP)

“LR” SERIES

0.060"   

±

0.010"

Surface Mount End-Banded Chip Thermistors

End-Banded Chip Thermistors

0805 and 1206 Style

Surface Mount

KR102B1K

LR102B1K

1000

10

B

2930

KR252B1K

LR252B1K

2500

10

B

2930

KR502F1K

LR502F1K

5000

10

F

3420

KR103F1K

LR103F1K

10000

10

F

3420

KR203F1K

LR203F1K

20000

10

F

3420

KR303J1K

LR303J1K

30000

10

J

3890

KR503J1K

LR503J1K

50000

10

J

3890

KR753J1K

LR753J1K

75000

10

J

3890

KR104J1K

LR104J1K

100000

10

J

3890

Part Number

0805 Series

*Resistance

Tol. ± %

Part Number

1206 Series

R-T Curve 

(See Pg. 44-45) 

Beta (˚K)

0-50˚C

*Resistance tolerances of ±5%, 20% are available upon request 

Resistance

Ω

@ 25˚C

0.079"

±

 0.008"

0.008" MIN

THICKNESS:

0.055" MAX

SOLDER COATED “LB-2000” LEACH
RESISTANT TERMINATIONS (TYP)

“KR” SERIES

0.049"  

±

  0.008"

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s leadless chip thermistor elements are designed for use on

hybrid substrates, integrated circuits or printed circuit boards. They

have silver metallization on their top and bottom which is suitable for

various contact techniques including wire bond, epoxy or solder. Since

they are manufactured using the most advanced equipment and tech-

nology available, their dimensional parameters are extremely uniform,

making the devices especially suitable for use with automatic handling

and placement equipment.

Features

• Surface mountable
• Small size
• Very low profile
• Low cost
• Rapid response time
• Rated to 150˚C

Options

• Non-standard resistance values and tolerances
• Special electrode materials (silver or gold)
• Special dimensions
• Tape and reel packaging

Specifications

• Thermal time constant: 2 seconds max.
• Dissipation constant: 1mW/˚C

Part 

Number

Resistance

Ω

@ 25˚C

*Resistance

Tol. ± %

Beta (˚K)

0-50˚C

L

T

(THICKNESS)

SILVER METALLIZATION
TOP AND BOTTOM

W

21

Dim. “L” Dim.“W” Dim. “T”

Nominal Dimensions (Inches)

Leadless Chip Thermistors

BC101B1K

100

10

B

2930

0.060

0.060

0.015

BC501F1K

500

10

F

3420

0.075

0.075

0.015

BC102F1K

1000

10

F

3420

0.045

0.045

0.015

BC222J1K

2252

10

J

3890

0.070

0.070

0.010

BC302J1K

3000

10

J

3890

0.065

0.065

0.010

BC502J1K

5000

10

J

3890

0.055

0.055

0.015

BC103J1K

10000

10

J

3890

0.040

0.040

0.015

BC203J1K

20000

10

J

3890

0.030

0.030

0.015

BC303J1K

30000

10

J

3890

0.025

0.025

0.020

BC503J1K

50000

10

J

3890

0.020

0.020

0.020

BC104R!K

100000

10

R

4140

0.022

0.022

0.016

Top/Bottom Terminated Chip Thermistors

Leadless

R-T Curve 

(See Pg. 44-45) 

22

U.S. Sensor’s inrush current limiting power thermistors are specially formulated

and processed NTC thermistors suitable for suppressing high inrush currents in

switching power supplies and other applications where the high initial starting

currents are undesirable. Their unique design enables them to handle extremely

high current and voltage levels. In a typical power supply application, the device

is used in series with the filter capacitors. Upon application of the initial voltage,

the device, due to its relatively high resistance, limits the current flow to an

acceptable level until the capacitors are charged. Thereafter, the device decreases

in resistance substantially to a level where the voltage drop across it is negligible.

Maximum Steady State Current (I

max

)

For power thermistors, the maximum continuous
steady state current, either DC or RMS AC, which
the device is capable of passing. The maximum
steady state current for U.S. Sensor power thermis-
tors is determined assuming a maximum operating
ambient temperature of 65˚C. If a specific applica-
tion requires ambient temperature operation above
65˚C, custom designed devices are available.

Resistance At Maximum Current (RI

max

)

For power thermistors, the approximate resistance of the 
device under maximum steady state current conditions.

The circuit diagram above
demonstrates a typical method to
limit inrush current at turn on in
a power supply. Two or more
inrush current limiting devices
may be used in series or in sepa-
rate legs of the supply circuit.
The devices may not be used in
parallel since one will tend to
pass nearly all the current avail-
able. U.S. Sensor’s inrush current
limiters may be used in either the
AC or DC portions of the circuit.

1.0" MIN

PROTECTIVE COATING

TINNED SOLDERABLE WIRE
SEE CHART FOR LEAD DIAMETER

D

0.310" NOM 

T

Inrush Current Limiting Power Thermistors

ST1R020B

1.0

20

0.015

0.900”

0.300”

0.040”

ST1R030B

1.0

30

0.015

1.250”

0.250”

0.040”

ST2R018B

2.0

18

0.030

0.900"

0350"

0.040"

ST2R503B

2.5

3

0.150

0.600"

0.250"

0.032"

ST2R507B

2.5

7

0.050

0.600"

0.250"

0.032"

ST2R509B

2.5

9

0.040

0.600"

0.250"

0.032"

ST2R510B

2.5

10

0.040

0.900"

0.300"

0.040"

ST2R515B

2.5

15

0.030

0.900"

0.300"

0.040"

ST5R002B

5.0

2

0.400

0.600"

0.250"

0.032"

ST5R005B

5.0

5

0.100

0.600"

0.250"

0.032"

ST5R007B

5.0

7

0.070

0.600"

0.250"

0.032"

ST7R004B

7.0

4

0.200

0.600"

0.300"

0.040"

ST10003B

10.0

3

0.200

0.450"

0.300"

0.032"

ST10005B

10.0

5

0.200

0.600"

0.350"

0.040"

ST10006B

10.0

6

0.150

0.600"

0.350"

0.040"

ST10010B

10.0

10

0.100

1.250”

0.300”

0.040”

ST20002B

20.0

2

0.600

0.500"

0.300"

0.032"

ST40002B

40.0

2

0.600

0.625"

0.250"

0.032"

R

0 

Resistance

@ 25˚C 

± 20% 

Ω

Part 

Number

I

max

Max. Steady State 

Current (Amps)

RI

max

Resis.

@ Max. 

Current 

Ω

Dim. “T”

(Max. Over

Coating)

Dim. “D”

(Max. Over

Coating)

Lead Dia.

(Nom.)

Power Thermistors

Inrush Current Limiting

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor’s thin film platinum resistance temperature detectors (Pt-

RTD) consist of a thin film platinum deposited on a ceramic substrate.

Thin film Pt-RTD’s provide cost advantages when compared to wire

wound Pt-RTD’s because of their lower material cost factor.

Features

• Glass coated platinum element
• Virtually linear relationship between temperature and resistance
• Capable of withstanding temperatures ranging from -50˚C to +500˚C.

Higher temperature ratings are available by special order

• High accuracy:  Resistance and temperature

deviation can be controlled to within ±0.06% and
±0.15˚C, a tolerance that corresponds to Class “A” of
IEC 751 or 1/2 DIN of DIN 43760

• High Reliability:  Capable of withstanding extreme

environmental conditions

• Available in various probe configurations for specific

applications

• Excellent stability even at high temperatures

Specifications

• Thermal time constant: 15 seconds max. (moving air)
• Dissipation constant: 2 mW/˚C (moving air)
• Maximum applied current: 1 mA

23

Thin Film Platinum RTD Elements

Platinum RTD’s

Thin Film

PPG101A1

100

A

0.06

0.15

3850

0.067”

0.095”

PPG101B1

100

B

0.12

0.30

3850

0.067”

0.095”

PPG101C1

100

C

0.24

0.60

3850

0.067”

0.095”

PPG101D1

100

D

0.48

1.20

3850

0.067”

0.095”

PPG501A1

500

A

0.06

0.15

3850

0.079”

0.118”

PPG501B1

500

B

0.12

0.30

3850

0.079”

0.118”

PPG501C1

500

C

0.24

0.60

3850

0.079”

0.118”

PPG501D1

500

D

0.48

1.20

3850

0.079”

0.118”

PPG102A1

1000

A

0.06

0.15

3850

0.079”

0.118”

PPG102B1

1000

B

0.12

0.30

3850

0.079”

0.118”

PPG102C1

1000

C

0.24

0.60

3850

0.079”

0.118”

PPG102D1

1000

D

0.48

1.20

3850

0.079”

0.118”

PPG102A2

1000

A

0.06

0.15

3750

0.079”

0.118”

PPG102B2

1000

B

0.12

0.30

3750

0.079”

0.118”

PPG102C2

1000

C

0.24

0.60

3750

0.079”

0.118”

PPG102D2

1000

D

0.48

1.20

3750

0.079”

0.118”

Part 

Number

Resistance

Tol. ± % @ 0˚C

Resistance

Ω

@ 0˚C

Temp.

Dev. ±˚C @ 0˚C

TCR

ppm/˚C

DIN 43760

Class

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

Dim “W”

(± 0.007”)

Dim “L”

(± 0.008”)

U.S. Sensor’s calibrated thermistor probes are manufactured with ultra

high stability thermistor elements.  This low cost high accuracy probe is

provided with a NIST traceable calibration certificate with data points

and a Resistance vs. Temperature (R/T) chart in 0.01˚C increments.

The ultra high stability, precision, cost, and inherent ruggedness of this

thermistor probe make it an excellent temperature standard for applica-

tions ranging from the metrology laboratory to the factory floor.

Features

• Excellent long term stability
• High accuracy
• Durable
• Low Cost
• NIST Traceability

Options

• Custom temperature ranges
• Probe lengths and styles
• Fahrenheit calibration certificate

Specifications

• Accuracy: ±0.01˚C
• Typical Drift: less than 0.01˚C per year

0.250" 

±

 0.005"

STRIP: 
0.250" 

±

 0.070"

9.50" 

±

 0.500"

THERMISTOR ELEMENT POTTED

NEAR TIP OF 300 SERIES

STAINLESS STEEL PROBE HOUSING

LEAD WIRE: 
24 AWG,  TWO CONDUCTOR,
STRANDED CONDUCTOR, 
PVC INSULATED ZIPCORD

“L2”

USP3021

10,000

0.01

˚C

-20˚C

to +70˚C

USP3986

100,000

0.01

˚C

0 to +105˚C

Calibrated Thermistor Probes

Part

Number

Accuracy

Temperature

Range

24

Thermistor Probes

Calibrated

Nominal 

Resistance 

Ω

@ 25˚C

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

U.S. Sensor manufactures an extensive line of thermistor and

RTD probes designed to meet the most demanding environ-

mental applications. In most cases, the probe housings are

available with various probe lengths as well as with a wide

selection of lead wire materials and terminations.

25

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

26

U.S. Sensor has automated equipment for attaching all major

brands of wire terminals and connector housings.  The photo

below shows just a small sampling of our capabilities.  Please

contact U.S. Sensor’s application engineering department for

assistance in selecting the wire terminations for your

application.

27

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

STRIP: 0.250" 

±

 0.070"

0.4375"

±

 0.035"

HEX

0.560" 

±

 0.035" 

0.200" 

±

 0.025"

1/8" - 27

NPT THREAD

(RHT)

“L2”

THERMISTOR ELEMENT 

POTTED IN

BRASS PIPE PLUG

H3475

1/8" NPT Brass

0.562"

±

 0.035"

HEX

0.880" 

±

 0.015" 

0.650" 

±

 0.050" 

0.250" 

±

 0.020"

1/4" - 18

NPT THREAD

(RHT)

“L2”

STRIP: 0.250" 

±

 0.070"

0.250" 

±

 0.010"

SENSOR ELEMENT POTTED

  NEAR TIP OF BRASS HOUSING

H2998

1/4" NPT Brass

0.562"

±

 0.030"

HEX

0.740" 

±

 0.035" 

0.190" 

±

 0.020

1/4" - 18

NPT THREAD

(RHT)

“L2”

STRIP:  0.250" 

±

 0.070"

THERMISTOR ELEMENT 

POTTED IN

BRASS PIPE PLUG

H3476

1/4" NPT Brass

“L1”

“D” 

NPT THREAD SIZES
AVAILABLE:
1/8"
1/4"
3/8"
1/2"
3/4"

DIM “D”:
1/8"

(0.125")

3/16" (0.188")
1/4"

(0.250")

“L2”

STRIP:  0.250" 

±

  0.070"

H2081

NPT Stainless Steel

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

THERMISTOR and RTD PROBE ASSEMBLIES

28

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

STRIP:
0.250" 

±

 0.070"

0.314" 

±

 0.010"

DIAMETER

0.400"

±

 0.035"

2.250" 

±

 0.250"

0.032"

±

 0.008"

0.815"

±

 0.015"

0.145" 

±

 0.010"  

#6 STUD SIZE

MOUNTING HOLES

0.595"

NOM C-C

SENSOR ELEMENT POTTED

NEAR CLOSED TIP OF 300 SERIES

STAINLESS STEEL TUBE

NICKEL PLATED

STEEL MOUNTING

FLANGE

0.250" 

±

 0.005"

“L2”

H3535

Stainless Steel, round flange

STRIP:

0.250"

±

 0.070"

0.048"

±

 0.008"

0.310"

NOM

0.380"

NOM

8.200" 

±

  0.045"

THERMISTOR ELEMENT POTTED
NEAR TIP OF 300 SERIES
STAINLESS STEEL PROBE HOUSING

0.090"

NOM

“L2”

0.250"

±

 0.005"

0.750" 

±

  0.010" (TYP)

1.000" 

±

  0.010"

(TYP)

0.225" 

±

  0.010"

RADIUS(TYP)

0.202" 

±

  0.007"

DIAMETER MOUNTING

HOLES (TYP)

0.750" 

±

  0.010"

(TYP)

0.530" 

±

  0.010" (TYP)

0.530" 

±

  0.010" (TYP)

H3783

Stainless Steel, rectangle flange

STRIP:
0.250" 

±

 0.070"

0.062"

±

 0.008"

2.720"

±

 0.100"

0.500"

±

 0.110"

1.5"

±

 0.050"

0.185" 

±

 0.018" DIAMETER

MOUNTING HOLES (TYP)

1.000"

±

 0.035" (TYP)

THERMISTOR ELEMENT POTTED
IN ALUMINUM PROBE HOUSING

“L2”

0.250" 

±

 0.015"

H3964

Stainless Steel, round flange

0.250"
NOM

0.037"

1.5"

±

 0.05"

1.0"

±

 0.010"

2 #6 SCREW

MTG. HOLES

0.750"

STAINLESS STEEL

STRAIN
RELIEF

THERMISTOR POTTED
IN TIP

0.125"

“L2”

H1060

Stainless Steel, round flange

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

29

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.250"
NOM

THERMISTOR POTTED 
IN TIP

DIM “D” = 1/8"    (0.125")

     3/16"  (0.1875")
     1/4"    (0.250")

STAINLESS
STEEL HOUSING

“L1”

“L2”

“D”

H2022

Stainless Steel

STRIP: 0.250" 

±

 0.070"

3.00" 

±

 0.100"

SENSOR ELEMENT POTTED 

NEAR TIP OF 300 SERIES

STAINLESS STEEL PROBE HOUSING

“L2”

0.250" 

±

 0.005"

H2766

Stainless Steel

STRIP: 0.250" 

±

 0.070"

0.625" 

±

 0.050"

SENSOR ELEMENT POTTED 

NEAR TIP OF 300 SERIES

STAINLESS STEEL PROBE HOUSING

“L2”

0.125" 

±

 0.005"

H3699

Stainless Steel

STRIP:
0.375" 

±

 0.150"

0.187" 

±

 0.015"

THERMISTOR ELEMENT

POTTED IN GOLD PLATED

COPPER PROBE HOUSING

38 AWG, TWO CONDUCTOR,

SOLID NICKEL CONDUCTOR,

HEAVY POLYURETHANE NYLON

INSULATED LEAD WIRE

0.047" 

±

 0.005"

“L2”

0.180" 

±

 0.015"

0.074" 

±

 0.005"

H3457

Fast response Micro-Probe

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

30

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

STRIP: 0.250" 

±

 0.070"

1.230" 

±

 0.130"

SENSOR ELEMENT POTTED 

NEAR TIP OF BRASS HOUSING

“L2”

0.243" 

±

 0.010"

H3171

Brass

0.200"
NOM

0.250"
NOM

0.600"
NOM

SENSOR POTTED IN
VINYL CUP

“L2”

H0927

Vinyl

0.236" 

±

 0.040"

STRIP: 0.250" 

±

 0.070"

1.350" 

±

 0.150"

THERMISTOR ELEMENT POTTED

IN VINYL PROBE HOUSING

“L2”

H3686

Vinyl

STRIP: 0.250" 

±

 0.070"

2.00" 

±

 0.070"

SENSOR ELEMENT POTTED 

NEAR TIP OF 300 SERIES

STAINLESS STEEL PROBE HOUSING

“L2”

0.250" 

±

 0.005"

H3700

Stainless Steel

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

31

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.250"
NOM

0.600"

±

0.050"

0.200"

±

0.010"

“L2”

THERMISTOR
ELEMENT POTTED
IN TIP OF EPOXY
CUP

H1817

Epoxy

0.154"

±

 0.010"

STRIP: 0.250" 

±

 0.070"

0.080"

±

 0.010"

0.140"

±

 0.010"

THERMISTOR ELEMENT

POTTED IN EPOXY HOUSING

“L2”

H2933

Epoxy

0.300"

±

 0.015"

STRIP: 0.250" 

±

 0.070"

0.150"

±

 0.010"

0.700"

±

 0.020"

THERMISTOR ELEMENT

POTTED IN EPOXY HOUSING

“L2”

H3241

Epoxy

STRIP
0.250"
NOM

0.1"

NOM

THERMISTOR POTTED
IN EPOXY CUP

“L2”

“L1”

H0934

Epoxy

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

32

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.250"
NOM

THERMISTOR ELEMENT
POTTED IN TIP OF
IRIDIZED ALUMINUM
HOUSING

H1801

Aluminum

0.250"
NOM

0.190"

±

 0.012"

TOP VIEW

SIDE VIEW

0.170"

NOM

THERMISTOR POTTED IN
TIP OF ALUMINUM HOUSING

“L2”

1.175"

NOM

0.030"

NOM

H2011

Pinched Aluminum

0.125"

1.250"

SPRING 
STRAIN RELIEF

GRAY VINYL
JACKETED LEAD WIRE

BNC
CONNECTOR

“L2”

H2098

BNC Connector

STRIP: 0.250" 

±

 0.070"

1.250" 

±

 0.035"

SENSOR ELEMENT POTTED 

NEAR TIP OF PLASTIC HOUSING

“L2”

0.369" 

±

 0.010"

H3336

Plastic

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

33

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED 

IN BARREL OF RING LUG

(BARREL DIAMETER: 0.210" 

±

 0.020")

MOUNTING HOLE DIAMETER:

0.171" NOMINAL

(#8 STUD SIZE)

0.312" 

±

 0.015"

0.720" MAX

“L2”

H2635

Ring Lug #8 Stud

0.250"
NOM

THERMISTOR POTTED IN
BARREL OF RING LUG

#6 STUD SIZE

0.281" NOM

0.640" MAX

“L2”

H1327

Ring Lug #6 Stud

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED 

IN BARREL OF RING LUG

(BARREL DIAMETER: 0.215" 

±

 0.015")

MOUNTING HOLE DIAMETER:

0.120" NOMINAL

(#4 STUD SIZE)

0.281"

±

 0.015"

0.620" 

±

 0.020"

“L2”

H2946

Ring Lug #4 Stud

STRIP: 0.250" 

±

 0.070"

1.250" 

±

 0.375"

POLYOLEFIN SHRINK

TUBING STRAIN RELIEF

THERMISTOR ELEMENT POTTED

IN PLASTIC HOUSING WITH

THERMALLY CONDUCTIVE EPOXY

GROOVE FOR O-RING

“L2”

0.400"

NOM

0.740"

NOM

0.575"

NOM

0.365"

NOM

0.300"

NOM

1.350"

NOM

H3863

Plastic Housing

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

34

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED 

IN BARREL OF RING LUG

(BARREL DIAMETER: 0.310" MAX)

MOUNTING HOLE DIAMETER:

0.265" NOMINAL
(1/4" STUD SIZE)

0.469" 

±

 0.015"

1.00" MAX

“L2”

H3390

Ring Lug 1/4" Stud

MOLDED

PLASTIC

CASE

TINNED SOLDERABLE

 LEAD WIRES (TYP)

0.400"

±

 0.020"

0.595"

±

 0.035"

0.250"

MAX

0.150" 

±

 0.011"

DIAMETER MOUNTING HOLE

THIS LEAD ELECTRICALLY

CONNECTED TO MOUNTING TAB

METAL

MOUNTING

TAB

0.165"

±

 0.025"

0.050"

±

 0.006"

0.020"

±

 0.005"

0.033"

±

 0.013"

0.200" 

±

 0.010"

C-C

0.057"

±

 0.013"

0.531" 

±

 0.031"

0.250"

±

 0.020"

H0220

T0220 Package

STRIP: 0.250" 

±

 0.070"

SENSOR ELEMENT POTTED IN 

BARREL OF COPPER LUG HOUSING

(BARREL DIAMETER: 0.290" 

±

 0.025")

MOUNTING HOLE DIAMETER:

0.180" NOMINAL

(#8 STUD SIZE)

TAB THICKNESS:

0.025" 

±

 0.008"

0.440" 

±

 0.020"

2.00" 

±

 0.070"

“L2”

SIDE VIEW

H3646

H3646

Copper Lug

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED 

IN BARREL OF RING LUG

(BARREL DIAMETER: 0.155" 

±

 0.020")

MOUNTING HOLE DIAMETER:

0.094" NOMINAL

(#2 STUD SIZE)

0.250"

±

 0.025"

0.530" 

±

 0.035"

“L2”

H3011

Ring Lug #2 Stud

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

35

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.250" 

±

 0.007"

“L2”

0.375"

±

 0.015"

4/40

THREAD

(RHT)

0.187"

±

 0.015"

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED

IN WELL OF ALUMINUM HEX HOUSING

H3123

Aluminum Hex 4/40 Thread

0.250" 

±

 0.007"

“L2”

0.375"

±

 0.015"

8/32

THREAD

(RHT)

0.375"

±

 0.015"

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED

IN WELL OF ALUMINUM HEX HOUSING

H2867

Aluminum Hex 8/32 Thread

0.250"

0.250"
NOM

“L2”

0.250" 

0.375"

6/32 THREAD

THERMISTOR POTTED
IN WELL OF ALUMINUM
HEX HOUSING

H1887

Aluminum Hex 6/32 Thread

0.645"

±

 0.025"

STRIP: 0.250" 

±

 0.070"

0.310"

±

 0.015"

THERMISTOR ELEMENT POTTED IN

BARREL OF FLAG TERMINAL

(BARREL DIAMETER: 0.220" NOMINAL)

MOUNTING HOLE DIAMETER:

0.145" NOMINAL

(#6 STUD SIZE)

H2965

Flag Terminal #6 Stud

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

36

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.3125"

±

 0.017"

HEX

0.250" 

±

 0.030" 

0.120" 

±

 0.025"

“L2”

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED IN

10/32 THREADED 300 SERIES

STAINLESS STEEL HEX HEAD SCREW

H3432

S/S Hex 10/32 Thread

 

0.164"

NOM

0.375" 

±

 0.025" 

“L2”

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED

IN 8/32 THREADED

STAINLESS STEEL SET SCREW

H3134

S/S Set Screw 8/32

 

0.190"

NOM

0.375" 

±

 0.025" 

“L2”

STRIP: 0.250" 

±

 0.070"

THERMISTOR ELEMENT POTTED

IN 10/32 THREADED

STAINLESS STEEL SET SCREW

H3135

S/S Set Screw 10/32

0.375"

±

 0.022"

HEX

0.190" 

±

 0.025

“L2”

THERMISTOR ELEMENT 

POTTED IN 1/4"-20 THREADED

BRASS HEX HEAD SCREW

0.250" 

±

 0.030" 

STRIP: 0.250" 

±

 0.070"

H3433

Brass Hex 1/4"

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

37

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

38 AWG, BIFILAR,
SOLID NICKEL, 2 CONDUCTOR,
HEAVY POLYURETHANE NYLON INSULATION

0.250"
NOM

0.150"

MAX

0.017"

MAX

“L2”

THERMISTOR 
ENCAPSULATED IN
POLYIMIDE TUBE

H1744

Polyimide 0.017" Diameter

STRIP: 0.250" 

±

 0.070"

0.140" 

±

 0.040"

THERMISTOR ELEMENT 

ENCAPSULATED IN

POLYIMIDE TUBE

30 AWG (0.010" DIAMETER),

SINGLE CONDUCTOR, SOLID CONDUCTOR,

KYNAR INSULATED LEAD WIRE

“L2”

0.059" MAX

H3192

Polyimide 0.059" Diameter

0.250"
NOM

THERMISTOR ENCAPSULATED
IN VINYL PROBE TIP

0.340" 

±

 0.050"

0.080"

MAX

“L2”

30 AWG. PVC INSULATED,
2 CONDUCTOR, SOLID,
ZIP CORD, WHITE

H2010

Vinyl

THERMISTOR SENSOR POTTED
WITHIN HOUSING NEAR 
THIS SURFACE

0.012"

±

 0.003"

0.235"

±

 0.010"

0.359"

±

 0.005"

BOTTOM VIEW

0.325"  

±

 0.005"

24 AWG. SOLID CONDUCTOR WIRE
TEFLON INSULATED (2 PLACES)

26AWG. STRANDED
TEFLON INSULATED WIRE
(2 PLACES)

INSULATED SPLICE
(2 PLACES)

“L2”

H1917

High Temperature

THERMISTOR and RTD PROBE ASSEMBLIES

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

38

Dimensions “L1”, “L2” and “D” are user
selectable. Contact U.S. Sensor’s applica-
tion engineering department to design a
probe assembly to best suit your use.

0.250"
NOM

0.950"
MAX

“L2”

0.150" MAX 

SHRINK
SLEEVE

H2049

Shrink Sleeve

0.250"
NOM

24 AWG, PVC INSULATED
ZIP CORD

EPOXY COATED
TIP

“L2”

0.165"

MAX

H1492

Epoxy Dip

THERMISTOR and RTD PROBE ASSEMBLIES

In addition to the products pictured in the previous pages,

U.S. Sensor manufactures numerous custom thermistor probes

and assemblies.  Please contact U.S. Sensor’s engineering

department for assistance in designing a temperature sensing

probe best suited to your specific application.

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

The following pages contain the resistance versus temperature

tables for all U.S. Sensor standard catalog thermistors.

U.S. Sensor manufactures numerous thermistors with non-

standard characteristics to suit particular applications.  If you

require a “Custom” resistance versus temperature characteristic,

please contact U.S. Sensor’s application engineering

department.  All U.S. Sensor resistance versus temperature

tables are available printed in degrees Fahrenheit or in degrees

Celsius.  In addition, tables covering extended temperature

ranges are also available.

39

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

-55

217,059

-54

201,629

-53

187,396

-52

174,260

-51

162,129

-50

150,921

-49

140,561

-48

130,977

-47

122,109

-46

113,898

-45

106,291

-44

99,241

-43

92,703

-42

86,637

-41

81,006

-40

75,777

-39

70,918

-38

66,401

-37

62,200

-36

58,292

-35

54,653

-34

51,264

-33

48,106

-32

45,162

-31

42,416

-30

39,855

-29

37,463

-28

35,230

-27

33,144

-26

31,194

-25

29,371

-24

27,665

-23

26,069

-22

24,574

-21

23,174

-20

21,862

-19

20,633

-18

19,480

-17

18,398

-16

17,383

-15

16,430

-14

15,535

-13

14,694

-12

13,903

-11

13,160

-10

12,461

-9

11,803

-8

11,183

-7

10,600

-6

10,051

-5

9,533

-4

9,045

-3

8,585

-2

8,151

-1

7,741

0

7,353

1

6,988

2

6,643

3

6,318

4

6,010

5

5,719

6

5,444

7

5,183

8

4,937

9

4,703

10

4,482

11

4,273

12

4,075

13

3,886

14

3,708

15

3,539

16

3,378

17

3,226

18

3,081

19

2,944

20

2,814

21

2,690

22

2,572

23

2,460

24

2,353

25

2,252

26

2,156

27

2,064

28

1,977

29

1,894

30

1,814

31

1,739

32

1,667

33

1,598

34

1,533

35

1,471

36

1,411

37

1,355

38

1,300

39

1,249

40

1,199

41

1,152

42

1,107

43

1,064

44

1,023

45

983.6

46

946.0

47

910.0

48

875.6

49

842.6

50

811.1

51

780.9

52

752.0

53

724.3

54

697.8

55

672.4

56

648.0

57

624.7

58

602.3

59

580.8

60

560.2

61

540.5

62

521.5

63

503.3

64

485.8

65

469.0

66

452.9

67

437.4

68

422.6

69

408.3

70

394.6

71

381.3

72

368.6

73

356.4

74

344.7

75

333.4

76

322.5

77

312.1

78

302.0

79

292.3

80

282.9

81

273.9

82

265.3

83

256.9

84

248.9

85

241.1

86

233.7

87

226.4

88

219.5

89

212.8

90

206.3

91

200.1

92

194.1

93

188.3

94

182.7

95

177.2

96

172.0

97

167.0

98

162.1

99

157.4

100

152.8

101

148.3

102

144.1

103

140.0

104

136.0

105

132.2

106

128.5

107

124.9

108

121.5

109

118.1

110

114.9

111

111.8

112

108.7

113

105.8

114

103.0

115

100.2

116

97.54

117

94.96

118

92.46

119

90.04

120

87.69

121

85.42

122

83.21

123

81.07

124

79.00

125

76.99

126

75.04

127

73.14

128

71.31

129

69.53

130

67.80

131

66.12

132

64.49

133

62.90

134

61.37

135

59.87

136

58.42

137

57.01

138

55.65

139

54.31

140

53.02

141

51.76

142

50.54

143

49.35

144

48.20

145

47.08

146

45.98

147

44.92

148

43.88

149

42.88

150

41.90

2,252 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55

96,385

-54

89,533

-53

83,213

-52

77,380

-51

71,993

-50

67,017

-49

62,416

-48

58,160

-47

54,222

-46

50,576

-45

47,198

-44

44,068

-43

41,165

-42

38,471

-41

35,971

-40

33,649

-39

31,491

-38

29,485

-37

27,620

-36

25,884

-35

24,268

-34

22,764

-33

21,361

-32

20,054

-31

18,835

-30

17,697

-29

16,636

-28

15,644

-27

14,718

-26

13,852

-25

13,042

-24

12,285

-23

11,576

-22

10,912

-21

10,290

-20

9,708

-19

9,162

-18

8,650

-17

8,170

-16

7,719

-15

7,296

-14

6,898

-13

6,525

-12

6,174

-11

5,844

-10

5,533

-9

5,241

-8

4,966

-7

4,707

-6

4,463

-5

4,233

-4

4,016

-3

3,812

-2

3,619

-1

3,437

0

3,265

1

3,103

2

2,950

3

2,805

4

2,669

5

2,540

6

2,417

7

2,302

8

2,192

9

2,089

10

1,990

11

1,897

12

1,809

13

1,726

14

1,647

15

1,571

16

1,500

17

1,433

18

1,368

19

1,307

20

1,249

21

1,194

22

1,142

23

1,092

24

1,045

25

1,000

26

957.3

27

916.6

28

877.8

29

840.9

30

805.7

31

772.2

32

740.2

33

709.8

34

680.8

35

653.1

36

626.7

37

601.5

38

577.4

39

554.5

40

532.6

41

511.6

42

491.6

43

472.5

44

454.2

45

436.8

46

420.1

47

404.1

48

388.8

49

374.2

50

360.2

51

346.8

52

333.9

53

321.6

54

309.9

55

298.6

56

287.8

57

277.4

58

267.4

59

257.9

60

248.8

61

240.0

62

231.6

63

223.5

64

215.7

65

208.3

66

201.1

67

194.2

68

187.6

69

181.3

70

175.2

71

169.3

72

163.7

73

158.3

74

153.1

75

148.0

76

143.2

77

138.6

78

134.1

79

129.8

80

125.6

81

121.6

82

117.8

83

114.1

84

110.5

85

107.1

86

103.8

87

100.6

88

97.47

89

94.49

90

91.62

91

88.85

92

86.18

93

83.60

94

81.11

95

78.70

96

76.38

97

74.14

98

71.97

99

69.88

100

67.86

101

65.87

102

63.99

103

62.17

104

60.41

105

58.71

106

57.07

107

55.48

108

53.94

109

52.46

110

51.02

111

49.63

112

48.28

113

46.98

114

45.72

115

44.50

116

43.31

117

42.17

118

41.06

119

39.98

120

38.94

121

37.93

122

36.95

123

36.00

124

35.08

125

34.19

126

33.32

127

32.48

128

31.66

129

30.87

130

30.10

131

29.36

132

28.64

133

27.93

134

27.25

135

26.59

136

25.94

137

25.32

138

24.71

139

24.12

140

23.54

141

22.99

142

22.44

143

21.92

144

21.40

145

20.90

146

20.42

147

19.95

148

19.49

149

19.04

150

18.60

1,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55

289,155

-54

268,599

-53

249,639

-52

232,140

-51

215,980

-50

201,050

-49

187,248

-48

174,481

-47

162,667

-46

151,729

-45

141,595

-44

132,203

-43

123,494

-42

115,413

-41

107,912

-40

100,946

-39

94,473

-38

88,456

-37

82,860

-36

77,653

-35

72,805

-34

68,291

-33

64,084

-32

60,162

-31

56,505

-30

53,092

-29

49,907

-28

46,932

-27

44,153

-26

41,555

-25

39,126

-24

36,854

-23

34,727

-22

32,736

-21

30,871

-20

29,124

-19

27,486

-18

25,950

-17

24,509

-16

23,157

-15

21,887

-14

20,695

-13

19,574

-12

18,521

-11

17,531

-10

16,600

-9

15,723

-8

14,898

-7

14,121

-6

13,389

-5

12,699

-4

12,049

-3

11,436

-2

10,858

-1

10,312

0

9,795

1

9,309

2

8,850

3

8,416

4

8,006

5

7,619

6

7,252

7

6,905

8

6,577

9

6,266

10

5,971

11

5,692

12

5,428

13

5,177

14

4,940

15

4,714

16

4,501

17

4,298

18

4,105

19

3,922

20

3,748

21

3,583

22

3,426

23

3,277

24

3,135

25

3,000

26

2,872

27

2,750

28

2,633

29

2,523

30

2,417

31

2,317

32

2,221

33

2,129

34

2,042

35

1,959

36

1,880

37

1,804

38

1,732

39

1,663

40

1,598

41

1,535

42

1,475

43

1,418

44

1,363

45

1,310

46

1,260

47

1,212

48

1,166

49

1,122

50

1,080

51

1,040

52

1,002

53

964.9

54

929.6

55

895.7

56

863.3

57

832.1

58

802.3

59

773.7

60

746.3

61

720.0

62

694.7

63

670.5

64

647.2

65

624.8

66

603.4

67

582.7

68

562.9

69

543.9

70

525.6

71

508.0

72

491.1

73

474.8

74

459.2

75

444.1

76

429.6

77

415.7

78

402.3

79

389.4

80

376.9

81

364.9

82

353.4

83

342.3

84

331.6

85

321.2

86

311.3

87

301.7

88

292.4

89

283.5

90

274.9

91

266.6

92

258.5

93

250.8

94

243.3

95

236.1

96

229.1

97

222.4

98

215.9

99

209.6

100

203.6

101

197.6

102

192.0

103

186.5

104

181.2

105

176.1

106

171.2

107

166.4

108

161.8

109

157.4

110

153.1

111

148.9

112

144.8

113

140.9

114

137.1

115

133.5

116

129.9

117

126.5

118

123.2

119

119.9

120

116.8

121

113.8

122

110.8

123

108.0

124

105.2

125

102.6

126

99.96

127

97.44

128

94.99

129

92.62

130

90.31

131

88.08

132

85.91

133

83.80

134

81.75

135

79.76

136

77.83

137

75.95

138

74.13

139

72.36

140

70.63

141

68.96

142

67.33

143

65.75

144

64.21

145

62.71

146

61.25

147

59.84

148

58.46

149

57.12

150

55.81

3,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Precision Interchangeable Thermistor Tables

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

40

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

-55

578,310

-54

537,199

-53

499,278

-52

464,279

-51

431,960

-50

402,100

-49

374,495

-48

348,963

-47

325,335

-46

303,458

-45

283,191

-44

264,407

-43

246,987

-42

230,826

-41

215,824

-40

201,892

-39

188,947

-38

176,913

-37

165,720

-36

155,306

-35

145,611

-34

136,581

-33

128,168

-32

120,325

-31

113,010

-30

106,185

-29

99,814

-28

93,864

-27

88,306

-26

83,110

-25

78,252

-24

73,707

-23

69,454

-22

65,472

-21

61,743

-20

58,248

-19

54,972

-18

51,900

-17

49,018

-16

46,314

-15

43,774

-14

41,390

-13

39,149

-12

37,042

-11

35,062

-10

33,199

-9

31,446

-8

29,796

-7

28,242

-6

26,778

-5

25,399

-4

24,099

-3

22,873

-2

21,716

-1

20,624

0

19,590

1

18,618

2

17,700

3

16,833

4

16,013

5

15,237

6

14,504

7

13,810

8

13,153

9

12,531

10

11,942

11

11,385

12

10,856

13

10,355

14

9,880

15

9,429

16

9,001

17

8,595

18

8,210

19

7,844

20

7,497

21

7,166

22

6,853

23

6,554

24

6,270

25

6,000

26

5,744

27

5,499

28

5,267

29

5,045

30

4,834

31

4,633

32

4,441

33

4,259

34

4,085

35

3,919

36

3,760

37

3,609

38

3,465

39

3,327

40

3,195

41

3,070

42

2,950

43

2,835

44

2,725

45

2,621

46

2,520

47

2,424

48

2,333

49

2,245

50

2,161

51

2,081

52

2,004

53

1,930

54

1,859

55

1,791

56

1,727

57

1,664

58

1,605

59

1,547

60

1,493

61

1,440

62

1,389

63

1,341

64

1,294

65

1,250

66

1,207

67

1,165

68

1,126

69

1,088

70

1,051

71

1,016

72

982.2

73

949.7

74

918.4

75

888.3

76

859.3

77

831.4

78

804.6

79

778.7

80

753.8

81

729.9

82

706.8

83

684.5

84

663.1

85

642.4

86

622.5

87

603.3

88

584.8

89

566.9

90

549.7

91

533.1

92

517.1

93

501.6

94

486.6

95

472.2

96

458.3

97

444.8

98

431.8

99

419.3

100

407.2

101

395.2

102

383.9

103

373.0

104

362.5

105

352.3

106

342.4

107

332.9

108

323.6

109

314.7

110

306.1

111

297.8

112

289.7

113

281.9

114

274.3

115

267.0

116

259.9

117

253.0

118

246.3

119

239.9

120

233.6

121

227.6

122

221.7

123

216.0

124

210.5

125

205.1

126

199.9

127

194.9

128

190.0

129

185.2

130

180.6

131

176.2

132

171.8

133

167.6

134

163.5

135

159.5

136

155.7

137

151.9

138

148.3

139

144.7

140

141.3

141

137.9

142

134.7

143

131.5

144

128.4

145

125.4

146

122.5

147

119.7

148

116.9

149

114.2

150

111.6

6,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55

481,925

-54

447,666

-53

416,065

-52

386,899

-51

359,967

-50

335,083

-49

312,079

-48

290,802

-47

271,112

-46

252,881

-45

235,992

-44

220,339

-43

205,823

-42

192,355

-41

179,854

-40

168,243

-39

157,456

-38

147,427

-37

138,100

-36

129,422

-35

121,342

-34

113,818

-33

106,807

-32

100,271

-31

94,175

-30

88,487

-29

83,178

-28

78,220

-27

73,588

-26

69,258

-25

65,210

-24

61,423

-23

57,879

-22

54,560

-21

51,452

-20

48,540

-19

45,810

-18

43,250

-17

40,849

-16

38,595

-15

36,479

-14

34,491

-13

32,624

-12

30,869

-11

29,218

-10

27,666

-9

26,205

-8

24,830

-7

23,535

-6

22,315

-5

21,166

-4

20,082

-3

19,060

-2

18,097

-1

17,187

0

16,325

1

15,515

2

14,750

3

14,027

4

13,344

5

12,698

6

12,087

7

11,508

8

10,961

9

10,443

10

9,952

11

9,487

12

9,047

13

8,629

14

8,233

15

7,857

16

7,501

17

7,163

18

6,842

19

6,537

20

6,247

21

5,972

22

5,710

23

5,462

24

5,225

25

5,000

26

4,786

27

4,583

28

4,389

29

4,204

30

4,028

31

3,861

32

3,701

33

3,549

34

3,404

35

3,265

36

3,133

37

3,007

38

2,887

39

2,772

40

2,663

41

2,558

42

2,458

43

2,363

44

2,271

45

2,184

46

2,100

47

2,020

48

1,944

49

1,871

50

1,801

51

1,734

52

1,670

53

1,608

54

1,549

55

1,493

56

1,439

57

1,387

58

1,337

59

1,290

60

1,244

61

1,200

62

1,158

63

1,117

64

1,079

65

1,041

66

1,006

67

971.2

68

938.2

69

906.5

70

876.0

71

846.7

72

818.5

73

791.4

74

765.3

75

740.2

76

716.1

77

692.8

78

670.5

79

648.9

80

628.2

81

608.2

82

589.0

83

570.4

84

552.6

85

535.4

86

518.8

87

502.8

88

487.3

89

472.5

90

458.1

91

444.3

92

430.9

93

418.0

94

405.5

95

393.5

96

381.9

97

370.7

98

359.9

99

349.4

100

339.3

101

329.4

102

319.9

103

310.8

104

302.0

105

293.5

106

285.3

107

277.4

108

269.7

109

262.3

110

255.1

111

248.1

112

241.4

113

234.9

114

228.6

115

222.5

116

216.6

117

210.8

118

205.3

119

199.9

120

194.7

121

189.6

122

184.7

123

180.0

124

175.4

125

170.9

126

166.6

127

162.4

128

158.3

129

154.4

130

150.5

131

146.8

132

143.2

133

139.7

134

136.3

135

132.9

136

129.7

137

126.6

138

123.5

139

120.6

140

117.7

141

114.9

142

112.2

143

109.6

144

107.0

145

104.5

146

102.1

147

99.73

148

97.43

149

95.20

150

93.02

5,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55

607,800

-54

569,604

-53

534,036

-52

500,901

-51

470,019

-50

441,224

-49

414,363

-48

389,296

-47

365,893

-46

344,034

-45

323,609

-44

304,517

-43

286,662

-42

269,958

-41

254,324

-40

239,686

-39

225,976

-38

213,129

-37

201,087

-36

189,794

-35

179,200

-34

169,258

-33

159,925

-32

151,159

-31

142,924

-30

135,185

-29

127,908

-28

121,065

-27

114,626

-26

108,566

-25

102,861

-24

97,487

-23

92,425

-22

87,653

-21

83,155

-20

78,913

-19

74,910

-18

71,133

-17

67,568

-16

64,201

-15

61,020

-14

58,014

-13

55,174

-12

52,487

-11

49,947

-10

47,543

-9

45,268

-8

43,115

-7

41,076

-6

39,144

-5

37,313

-4

35,578

-3

33,934

-2

32,374

-1

30,894

0

29,490

1

28,155

2

26,888

3

25,685

4

24,543

5

23,457

6

22,425

7

21,444

8

20,512

9

19,624

10

18,780

11

17,977

12

17,212

13

16,484

14

15,791

15

15,130

16

14,501

17

13,901

18

13,329

19

12,783

20

12,263

21

11,766

22

11,293

23

10,840

24

10,409

25

10,000

26

9,602

27

9,226

28

8,866

29

8,522

30

8,194

31

7,879

32

7,579

33

7,291

34

7,016

35

6,752

36

6,500

37

6,258

38

6,027

39

5,805

40

5,592

41

5,389

42

5,194

43

5,007

44

4,827

45

4,655

46

4,490

47

4,331

48

4,179

49

4,033

50

3,893

51

3,758

52

3,629

53

3,505

54

3,385

55

3,271

56

3,160

57

3,054

58

2,952

59

2,854

60

2,760

61

2,669

62

2,582

63

2,498

64

2,417

65

2,339

66

2,264

67

2,191

68

2,122

69

2,055

70

1,990

71

1,928

72

1,868

73

1,810

74

1,754

75

1,700

76

1,648

77

1,598

78

1,550

79

1,503

80

1,458

81

1,414

82

1,372

83

1,332

84

1,293

85

1,255

86

1,218

87

1,183

88

1,149

89

1,116

90

1,084

91

1,053

92

1,023

93

994.2

94

966.3

95

939.3

96

913.2

97

887.9

98

863.4

99

839.7

100

816.8

101

794.6

102

773.1

103

752.3

104

732.1

105

712.6

106

693.6

107

675.3

108

657.5

109

640.3

110

623.6

111

607.4

112

591.6

113

576.4

114

561.6

115

547.3

116

533.4

117

519.9

118

506.8

119

494.1

120

481.8

121

469.8

122

458.2

123

446.9

124

435.9

125

425.3

126

414.9

127

404.9

128

395.1

129

385.6

130

376.4

131

367.4

132

358.7

133

350.3

134

342.0

135

334.0

136

326.3

137

318.7

138

311.3

139

304.2

140

297.2

141

290.4

142

283.8

143

277.4

144

271.2

145

265.1

146

259.2

147

253.4

148

247.8

149

242.3

150

237.0

10,000 

Ω

@ 25˚C Curve “G”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Precision Interchangeable Thermistor Tables

Beta

0-50˚C

3575

R Ratio
R

0

/R

50

˚C

7.575

41

1832 West Collins Avenue, Orange, CA 92867 • Tel. (714) 639-1000 • Fax (714) 639-1220 • www.ussensor.com

-55 1,927,698
-54 1,790,663
-53 1,664,260
-52 1,547,598
-51 1,439,868
-50 1,340,332
-49 1,248,317
-48 1,163,210
-47 1,084,450
-46 1,011,525
-45

943,970

-44

881,355

-43

823,291

-42

769,420

-41

719,414

-40

672,973

-39

629,822

-38

589,709

-37

552,401

-36

517,687

-35

485,370

-34

455,271

-33

427,226

-32

401,082

-31

376,699

-30

353,949

-29

332,712

-28

312,880

-27

294,352

-26

277,034

-25

260,840

-24

245,691

-23

231,514

-22

218,241

-21

205,809

-20

194,160

-19

183,241

-18

173,001

-17

163,395

-16

154,379

-15

145,915

-14

137,965

-13

130,496

-12

123,475

-11

116,873

-10

110,663

-9

104,820

-8

99,320

-7

94,140

-6

89,261

-5

84,663

-4

80,329

-3

76,242

-2

72,387

-1

68,748

0

65,300

1

62,061

2

59,000

3

56,109

4

53,375

5

50,791

6

48,346

7

46,033

8

43,844

9

41,771

10

39,808

11

37,949

12

36,186

13

34,516

14

32,932

15

31,429

16

30,004

17

28,651

18

27,367

19

26,147

20

24,989

21

23,888

22

22,842

23

21,847

24

20,901

25

20,000

26

19,146

27

18,331

28

17,556

29

16,817

30

16,114

31

15,444

32

14,805

33

14,196

34

13,616

35

13,062

36

12,534

37

12,030

38

11,549

39

11,090

40

10,651

41

10,233

42

9,832

43

9,450

44

9,085

45

8,735

46

8,401

47

8,082

48

7,776

49

7,483

50

7,203

51

6,935

52

6,678

53

6,433

54

6,197

55

5,971

56

5,755

57

5,548

58

5,349

59

5,158

60

4,975

61

4,800

62

4,631

63

4,470

64

4,315

65

4,166

66

4,022

67

3,885

68

3,753

69

3,626

70

3,504

71

3,387

72

3,274

73

3,166

74

3,061

75

2,961

76

2,864

77

2,771

78

2,682

79

2,596

80

2,513

81

2,433

82

2,356

83

2,282

84

2,210

85

2,141

86

2,075

87

2,011

88

1,949

89

1,890

90

1,832

91

1,777

92

1,724

93

1,672

94

1,622

95

1,574

96

1,528

97

1,483

98

1,439

99

1,398

100

1,357

101

1,317

102

1,280

103

1,243

104

1,208

105

1,174

106

1,141

107

1,110

108

1,079

109

1,049

110

1,020

111

992.5

112

965.6

113

939.6

114

914.3

115

889.9

116

866.2

117

843.3

118

821.1

119

799.6

120

778.8

121

758.6

122

739.0

123

720.0

124

701.6

125

683.7

126

666.4

127

649.6

128

633.3

129

617.5

130

602.1

131

587.2

132

572.7

133

558.7

134

545.0

135

531.7

136

518.9

137

506.3

138

494.2

139

482.4

140

470.9

141

459.7

142

448.9

143

438.3

144

428.1

145

418.1

146

408.4

147

398.9

148

389.7

149

380.8

150

372.1

20,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55

963,849

-54

895,332

-53

832,130

-52

773,799

-51

719,934

-50

670,166

-49

624,159

-48

581,605

-47

542,225

-46

505,763

-45

471,985

-44

440,678

-43

411,646

-42

384,710

-41

359,707

-40

336,487

-39

314,911

-38

294,854

-37

276,201

-36

258,843

-35

242,685

-34

227,636

-33

213,613

-32

200,541

-31

188,350

-30

176,974

-29

166,356

-28

156,440

-27

147,176

-26

138,517

-25

130,420

-24

122,846

-23

115,757

-22

109,121

-21

102,905

-20

97,080

-19

91,620

-18

86,501

-17

81,697

-16

77,190

-15

72,957

-14

68,983

-13

65,248

-12

61,737

-11

58,437

-10

55,332

-9

52,410

-8

49,660

-7

47,070

-6

44,631

-5

42,332

-4

40,165

-3

38,121

-2

36,193

-1

34,374

0

32,650

1

31,030

2

29,500

3

28,054

4

26,688

5

25,395

6

24,173

7

23,017

8

21,922

9

20,886

10

19,904

11

18,974

12

18,093

13

17,258

14

16,466

15

15,715

16

15,002

17

14,325

18

13,683

19

13,074

20

12,494

21

11,944

22

11,421

23

10,924

24

10,451

25

10,000

26

9,573

27

9,166

28

8,778

29

8,409

30

8,057

31

7,722

32

7,402

33

7,098

34

6,808

35

6,531

36

6,267

37

6,015

38

5,774

39

5,545

40

5,326

41

5,116

42

4,916

43

4,725

44

4,542

45

4,368

46

4,201

47

4,041

48

3,888

49

3,742

50

3,602

51

3,468

52

3,339

53

3,216

54

3,099

55

2,986

56

2,878

57

2,774

58

2,674

59

2,579

60

2,488

61

2,400

62

2,316

63

2,235

64

2,157

65

2,083

66

2,011

67

1,942

68

1,876

69

1,813

70

1,752

71

1,693

72

1,637

73

1,583

74

1,531

75

1,480

76

1,432

77

1,386

78

1,341

79

1,298

80

1,256

81

1,216

82

1,178

83

1,141

84

1,105

85

1,071

86

1,038

87

1,006

88

974.7

89

944.9

90

916.2

91

888.5

92

861.8

93

836.0

94

811.1

95

787.0

96

763.8

97

741.4

98

719.7

99

698.8

100

678.6

101

658.7

102

639.9

103

621.7

104

604.1

105

587.1

106

570.7

107

554.8

108

539.4

109

524.6

110

510.2

111

496.3

112

482.8

113

469.8

114

457.2

115

445.0

116

433.1

117

421.7

118

410.6

119

399.8

120

389.4

121

379.3

122

369.5

123

360.0

124

350.8

125

341.9

126

333.2

127

324.8

128

316.6

129

308.7

130

301.0

131

293.6

132

286.4

133

279.3

134

272.5

135

265.9

136

259.4

137

253.2

138

247.1

139

241.2

140

235.4

141

229.9

142

224.4

143

219.2

144

214.0

145

209.0

146

204.2

147

199.5

148

194.9

149

190.4

150

186.0

10,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55 2,891,548
-54 2,685,995
-53 2,496,389
-52 2,321,397
-51 2,159,802
-50 2,010,498
-49 1,872,476
-48 1,744,814
-47 1,626,674
-46 1,517,288
-45 1,415,955
-44 1,322,033
-43 1,234,937
-42 1,154,131
-41 1,079,122
-40 1,009,460
-39

944,734

-38

884,563

-37

828,602

-36

776,530

-35

728,055

-34

682,907

-33

640,839

-32

601,623

-31

565,049

-30

530,923

-29

499,069

-28

469,320

-27

441,528

-26

415,550

-25

391,260

-24

368,537

-23

347,271

-22

327,362

-21

308,714

-20

291,240

-19

274,861

-18

259,502

-17

245,092

-16

231,569

-15

218,872

-14

206,948

-13

195,743

-12

185,212

-11

175,310

-10

165,995

-9

157,230

-8

148,980

-7

141,210

-6

133,892

-5

126,995

-4

120,494

-3

114,363

-2

108,580

-1

103,122

0

97,950

1

93,091

2

88,501

3

84,163

4

80,063

5

76,186

6

72,519

7

69,050

8

65,766

9

62,657

10

59,712

11

56,923

12

54,279

13

51,774

14

49,398

15

47,144

16

45,006

17

42,976

18

41,050

19

39,221

20

37,483

21

35,832

22

34,263

23

32,771

24

31,352

25

30,000

26

28,719

27

27,497

28

26,333

29

25,226

30

24,171

31

23,165

32

22,207

33

21,294

34

20,423

35

19,593

36

18,801

37

18,045

38

17,323

39

16,635

40

15,977

41

15,349

42

14,749

43

14,175

44

13,627

45

13,103

46

12,602

47

12,122

48

11,664

49

11,225

50

10,805

51

10,403

52

10,018

53

9,649

54

9,296

55

8,957

56

8,633

57

8,321

58

8,023

59

7,737

60

7,463

61

7,200

62

6,947

63

6,705

64

6,472

65

6,248

66

6,034

67

5,827

68

5,629

69

5,439

70

5,256

71

5,080

72

4,911

73

4,748

74

4,592

75

4,441

76

4,296

77

4,157

78

4,023

79

3,894

80

3,769

81

3,649

82

3,534

83

3,423

84

3,316

85

3,212

86

3,113

87

3,017

88

2,924

89

2,835

90

2,749

91

2,666

92

2,585

93

2,508

94

2,433

95

2,361

96

2,291

97

2,224

98

2,159

99

2,096

100

2,036

101

1,976

102

1,920

103

1,865

104

1,812

105

1,761

106

1,712

107

1,664

108

1,618

109

1,574

110

1,531

111

1,489

112

1,448

113

1,409

114

1,371

115

1,335

116

1,299

117

1,265

118

1,232

119

1,199

120

1,168

121

1,138

122

1,108

123

1,080

124

1,052

125

1,026

126

999.6

127

974.4

128

949.9

129

926.2

130

903.1

131

880.8

132

859.1

133

838.0

134

817.5

135

797.6

136

778.3

137

759.5

138

741.3

139

723.6

140

706.3

141

689.6

142

673.3

143

657.5

144

642.1

145

627.1

146

612.5

147

598.4

148

584.6

149

571.2

150

558.1

30,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Precision Interchangeable Thermistor Tables

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

42

-55 5,984,995
-54 5,547,622
-53 5,144,781
-52 4,773,558
-51 4,431,296
-50 4,115,579
-49 3,824,203
-48 3,555,159
-47 3,306,613
-46 3,076,892
-45 2,864,468
-44 2,667,946
-43 2,486,047
-42 2,317,606
-41 2,161,554
-40 2,016,913
-39 1,882,786
-38 1,758,354
-37 1,642,863
-36 1,535,622
-35 1,435,999
-34 1,343,411
-33 1,257,325
-32 1,177,247
-31 1,102,729
-30 1,033,353
-29

968,737

-28

908,531

-27

852,408

-26

800,072

-25

751,246

-24

705,677

-23

663,129

-22

623,388

-21

586,252

-20

551,538

-19

519,075

-18

488,706

-17

460,283

-16

433,673

-15

408,750

-14

385,398

-13

363,511

-12

342,989

-11

323,740

-10

305,678

-9

288,723

-8

272,803

-7

257,849

-6

243,797

-5

230,588

-4

218,168

-3

206,485

-2

195,491

-1

185,144

0

175,400

1

166,215

2

157,562

3

149,407

4

141,718

5

134,466

6

127,626

7

121,170

8

115,075

9

109,320

10

103,884

11

98,747

12

93,892

13

89,302

14

84,960

15

80,853

16

76,966

17

73,287

18

69,802

19

66,502

20

63,376

21

60,413

22

57,603

23

54,940

24

52,413

25

50,000

26

47,741

27

45,581

28

43,530

29

41,582

30

39,731

31

37,972

32

36,300

33

34,710

34

33,198

35

31,760

36

30,391

37

29,088

38

27,848

39

26,667

40

25,542

41

24,470

42

23,449

43

22,475

44

21,546

45

20,661

46

19,816

47

19,011

48

18,241

49

17,507

50

16,806

51

16,137

52

15,498

53

14,887

54

14,303

55

13,745

56

13,211

57

12,701

58

12,213

59

11,746

60

11,299

61

10,872

62

10,462

63

10,070

64

9,695

65

9,335

66

8,991

67

8,661

68

8,344

69

8,041

70

7,750

71

7,471

72

7,203

73

6,947

74

6,700

75

6,464

76

6,237

77

6,019

78

5,810

79

5,608

80

5,415

81

5,230

82

5,051

83

4,880

84

4,715

85

4,556

86

4,404

87

4,257

88

4,116

89

3,981

90

3,850

91

3,724

92

3,603

93

3,486

94

3,374

95

3,266

96

3,162

97

3,061

98

2,965

99

2,871

100

2,781

101

2,695

102

2,611

103

2,530

104

2,453

105

2,378

106

2,305

107

2,235

108

2,168

109

2,102

110

2,039

111

1,979

112

1,920

113

1,863

114

1,808

115

1,755

116

1,704

117

1,655

118

1,607

119

1,561

120

1,516

121

1,473

122

1,431

123

1,391

124

1,352

125

1,314

126

1,277

127

1,242

128

1,207

129

1,174

130

1,142

131

1,111

132

1,081

133

1,051

134

1,023

135

995.8

136

969.2

137

943.5

138

918.5

139

894.3

140

870.9

141

848.2

142

826.1

143

804.8

144

784.0

145

763.9

146

744.4

147

725.5

148

707.1

149

689.3

150

672.0

50,000 

Ω

@ 25˚C Curve “R”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

4140

R Ratio
R

0

/R

50

˚C

10.437

-55 4,819,246
-54 4,476,658
-53 4,160,649
-52 3,868,995
-51 3,599,670
-50 3,350,830
-49 3,120,793
-48 2,908,024
-47 2,711,124
-46 2,528,813
-45 2,359,924
-44 2,203,388
-43 2,058,229
-42 1,923,551
-41 1,798,536
-40 1,682,434
-39 1,574,556
-38 1,474,272
-37 1,381,003
-36 1,294,217
-35 1,213,425
-34 1,138,179
-33 1,068,065
-32 1,002,705
-31

941,748

-30

884,872

-29

831,781

-28

782,201

-27

735,879

-26

692,584

-25

652,100

-24

614,228

-23

578,786

-22

545,603

-21

514,523

-20

485,401

-19

458,102

-18

432,503

-17

408,487

-16

385,948

-15

364,787

-14

344,913

-13

326,239

-12

308,687

-11

292,183

-10

276,658

-9

262,050

-8

248,299

-7

235,350

-6

223,153

-5

211,658

-4

200,823

-3

190,605

-2

180,966

-1

171,871

0

163,250

1

155,151

2

147,501

3

140,272

4

133,439

5

126,977

6

120,866

7

115,083

8

109,610

9

104,428

10

99,520

11

94,871

12

90,466

13

86,289

14

82,329

15

78,573

16

75,010

17

71,627

18

68,417

19

65,368

20

62,471

21

59,720

22

57,104

23

54,618

24

52,253

25

50,000

26

47,864

27

45,828

28

43,889

29

42,043

30

40,284

31

38,609

32

37,012

33

35,490

34

34,039

35

32,655

36

31,335

37

30,075

38

28,872

39

27,725

40

26,628

41

25,581

42

24,581

43

23,625

44

22,712

45

21,838

46

21,003

47

20,204

48

19,440

49

18,708

50

18,008

51

17,338

52

16,696

53

16,082

54

15,493

55

14,928

56

14,388

57

13,869

58

13,372

59

12,895

60

12,438

61

11,999

62

11,578

63

11,174

64

10,786

65

10,414

66

10,056

67

9,712

68

9,382

69

9,065

70

8,760

71

8,467

72

8,185

73

7,914

74

7,653

75

7,402

76

7,161

77

6,928

78

6,705

79

6,489

80

6,282

81

6,082

82

5,890

83

5,704

84

5,526

85

5,354

86

5,188

87

5,028

88

4,873

89

4,725

90

4,581

91

4,443

92

4,309

93

4,180

94

4,055

95

3,935

96

3,819

97

3,707

98

3,599

99

3,494

100

3,393

101

3,294

102

3,199

103

3,108

104

3,020

105

2,935

106

2,853

107

2,774

108

2,697

109

2,623

110

2,551

111

2,481

112

2,414

113

2,349

114

2,286

115

2,225

116

2,166

117

2,108

118

2,053

119

1,999

120

1,947

121

1,896

122

1,847

123

1,800

124

1,754

125

1,709

126

1,666

127

1,624

128

1,583

129

1,544

130

1,505

131

1,468

132

1,432

133

1,397

134

1,363

135

1,329

136

1,297

137

1,266

138

1,235

139

1,206

140

1,177

141

1,149

142

1,122

143

1,096

144

1,070

145

1,045

146

1,021

147

997.3

148

974.3

149

952.0

150

930.2

50,000 

Ω

@ 25˚C Curve “J”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Beta

0-50˚C

3890

R Ratio
R

0

/R

50

˚C

9.065

-55 11,969,990
-54 11,095,244
-53 10,289,563
-52 9,547,115
-51 8,862,592
-50 8,231,159
-49 7,648,407
-48 7,110,318
-47 6,613,226
-46 6,153,784
-45 5,728,937
-44 5,335,891
-43 4,972,095
-42 4,635,213
-41 4,323,108
-40 4,033,826
-39 3,765,573
-38 3,516,708
-37 3,285,725
-36 3,071,245
-35 2,871,998
-34 2,686,823
-33 2,514,649
-32 2,354,495
-31 2,205,457
-30 2,066,705
-29 1,937,475
-28 1,817,061
-27 1,704,817
-26 1,600,144
-25 1,502,492
-24 1,411,353
-23 1,326,259
-22 1,246,776
-21 1,172,505
-20 1,103,077
-19 1,038,151
-18

977,411

-17

920,566

-16

867,345

-15

817,500

-14

770,797

-13

727,023

-12

685,978

-11

647,480

-10

611,355

-9

577,447

-8

545,607

-7

515,698

-6

487,594

-5

461,177

-4

436,336

-3

412,970

-2

390,983

-1

370,287

0

350,800

1

332,431

2

315,124

3

298,813

4

283,436

5

268,933

6

255,251

7

242,339

8

230,151

9

218,641

10

207,768

11

197,495

12

187,785

13

178,604

14

169,921

15

161,706

16

153,932

17

146,573

18

139,605

19

133,005

20

126,751

21

120,825

22

115,207

23

109,879

24

104,826

25

100,000

26

95,481

27

91,161

28

87,060

29

83,164

30

79,462

31

75,944

32

72,600

33

69,421

34

66,397

35

63,520

36

60,783

37

58,177

38

55,696

39

53,334

40

51,084

41

48,940

42

46,897

43

44,950

44

43,093

45

41,322

46

39,633

47

38,021

48

36,483

49

35,015

50

33,613

51

32,274

52

30,995

53

29,773

54

28,606

55

27,489

56

26,422

57

25,402

58

24,426

59

23,492

60

22,598

61

21,743

62

20,925

63

20,141

64

19,390

65

18,671

66

17,982

67

17,321

68

16,688

69

16,082

70

15,500

71

14,942

72

14,407

73

13,893

74

13,401

75

12,928

76

12,474

77

12,038

78

11,619

79

11,217

80

10,831

81

10,459

82

10,103

83

9,760

84

9,430

85

9,113

86

8,808

87

8,515

88

8,233

89

7,961

90

7,700

91

7,448

92

7,206

93

6,973

94

6,748

95

6,532

96

6,324

97

6,123

98

5,929

99

5,743

100

5,563

101

5,390

102

5,222

103

5,061

104

4,905

105

4,755

106

4,610

107

4,470

108

4,335

109

4,205

110

4,079

111

3,957

112

3,840

113

3,726

114

3,617

115

3,511

116

3,409

117

3,310

118

3,214

119

3,122

120

3,032

121

2,946

122

2,862

123

2,781

124

2,703

125

2,628

126

2,554

127

2,483

128

2,415

129

2,348

130

2,284

131

2,222

132

2,161

133

2,103

134

2,046

135

1,992

136

1,938

137

1,887

138

1,837

139

1,789

140

1,742

141

1,696

142

1,652

143

1,610

144

1,568

145

1,528

146

1,489

147

1,451

148

1,414

149

1,379

150

1,344

100,000 

Ω

@ 25˚C Curve “R”

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Temp.

˚C

R 

Ω

Precision Interchangeable Thermistor Tables

Beta

0-50˚C

4140

R Ratio
R

0

/R

50

˚C

10.437

43

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