Resistors

Product Data Short Form

BI Technologies   IRC   Welwyn

TT Electronics plc is a global electronics company. 
Within its resistors business unit are multiple manufacturing facilities and 
dedicated engineering teams providing custom solutions.

BI Technologies, IRC and Welwyn are market leading brands within this group, with a 70-year track record of resistive 

component innovation. 

TT Electronics offers the full spectrum of resistor technologies and a broad standard product range, in addition to providing 

custom engineered solutions.

 

Medical Application

A manufacturer of portable automatic external defibrillators (AEDs) 

needed a compact high voltage resistor for use in the charge regulation 

circuit. Standard products from other sources were proving unreliable under 

conditions of sustained high humidity and high voltage loading. The precision 

and stability with time and temperature were critical as they directly impact 

the tight error budget for delivered energy dosage. TT Electronics engineers 

solved this problem with a planar resistor with optimised thick-film element 

design and a high integrity epoxy coating and supported the customer 

through their rigorous approval process.  

Other innovations in this area include pulse withstanding chip resistors 

for monitor circuit protection and a 200J energy dump resistor based on 

reinforced wirewound technology to enable daily self-test diagnostic cycles

.

Aerospace Application

A designer working on an anti-ice aircraft surface heating system had 

to meet stringent safety requirements in the event of failure of a heating 

circuit. The failure mode to be mitigated was an “always on” condition, and 

this called for a single shot disconnection switch. TT Electronics engineers 

were contacted to help identify a solution, but  nothing was available off the 

shelf. A set of potential solutions was proposed and the preferred option was 

a combination of self-switching resistive heater and thermal fuse. This was 

developed from concept into a fully qualified component within the required 

timescale. The compact format of the design also contributed significantly 

to the customer’s mass reduction target. 

Consumer Application

Safety is becoming increasingly important in consumer products and a key 

aspect is protection against fire by the use of fusing line input resistors. With 

one component it is possible to reduce inrush current, protect against power 

line surges and give flameproof circuit opening under fault conditions. One 

company working in this area had a further need for fusing to be inaudible 

and invisible to the consumer.  

TT Electronics devised a solution using a wirewound resistor with impact 

absorbing coating which contains the fused element without fragmenting. 

Other innovations include the offer of UL1412 recognised fusing resistors.

Resistors

1

Resistors

2

Industrial Application

High-end industrial circuit breakers need to give reliable long-term 

performance under harsh conditions. In particular, transient surges caused 

by switching of inductive loads present a challenge. When a designer of 

industrial circuit breakers needed to modernise a design to SMT format, a 

through-hole wirewound protection resistor was proving hard to replace 

without filling a very large area with chip resistors. TT Electronics developed 

a solution whereby an axial part is leadformed and packed in blister tape. 

The resulting “ZI-form” component can be picked, placed and reflowed as an 

SMT part.

Using the Short Form

1.  Choose the right technology - page 3

 

Find the best resistor technology for the set of features your design needs

2.  Choose the right product series - pages 3 & 4

 

Use the SMT and Through Hole selector guides to identify a series which has 

 

the required ratings, precision and value range

3.  Choose the right product type - pages 5 to 16

 

Refer to product tables to select the correct size and link to further data

 

 

Or, if you know the product series, use the Quick Find index.

Quick Find

Series

Page

Series

Page

Series

Page

Series

Page

1600/1900

9

HVP

7

PHVP

8

WBC

13

3810

6

LHVC

7

PLO

5

WCR

16

4500

6

LOB

5

PR

13

WDBR

11

4530

6

LRCS/LVC

5

PTCR

15

WH

11

4800

12

LR(F)

5

PTS

15

WHPC

11

ASC

16

LRF3W

5

PWC

9

WHS

9

BCN

16

LRMA

5

PWP

9

WHVL

8

BPC

10

LRZ

15

PWRL

6

WIN

14

BPR

10

MAR

13

RC

13

WL4

15

CAR

12

MFP

10

RCP

13

WMHP

11

CC

8

MFR

15

RHVD

7

WMO-S

12

CHP

8

MFR4P

16

SC3

10

WPRT

12

CR

14

MF-S

10

SOT143

13

WP-S

9

CRT

16

MH

7

SP20F

14

WP-SZI

12

DIV23

12

OAR

5

SPP

14

WPYP

8

DSC

9

OARS

5

SQM

10

WRM

14

EMC

14

PCF

13

SQP

11

WSM

12

GC

6

PCFH

13

T 

7

WSMHP

12

GCR

16

PCFP

13

ULR

6

GPCF

16

PCR

13

ULW

14

HR

6

PFC

15

VRW

8

HTCR

10

PFC-D

13

W20

11

HVC

7

PFC-HT

15

W30

9

HVD

7

PHVD

8

WA84F

14

Technology

Thick Film

Thick Film 

on Steel

Metal Film

Metal Oxide

WIN Film

Carbon 

Composition

Wirewound

Metal Alloy

Metal Foil

Low values

Good

Poor

Fair

Poor

Fair

Poor

Excellent

Excellent

Poor

High values

Excellent

Poor

Good

Fair

Good

Poor

Poor

Poor

Poor

Tolerance

Good

Poor

Excellent

Poor

Excellent

Poor

Fair

Fair

Excellent

TCR

Fair

Poor

Excellent

Fair

Excellent

Poor

Good

Fair

Excellent

Power rating

Good

Excellent

Fair

Good

Fair

Fair

Excellent

Fair

Poor

Voltage rating

Excellent

Fair

Fair

Good

Fair

Poor

Poor

Poor

Fair

Load Stability

Fair

Fair

Good

Fair

Excellent

Poor

Fair

Fair

Excellent

Damp Stability

Good

Good

Poor

Fair

Excellent

Poor

Good

Good

Fair

Overload

Good

Excellent

Fair

Good

Fair

Fair

Good

Fair

Poor

Surge

Good

Good

Poor

Good

Fair

Excellent

Good

Good

Fair

High Temp.

Good

Excellent

Fair

Good

Good

Poor

Good

Good

Fair

Surface

Mount

Products

Power (W)

LEV (V)

TCR (ppm/°C)

Tol. (%)

Value (

Ω

)

C

at

egory

Series

0.01

0.1

1

10

100

10

100

1000

10K

100K

≤5

10 - 15

25

50

≥100

≤0.1

0.25- 0.5

1 - 2

≥5

R001

R01

R1

1R

10R

100R

1K

10K

100K

1M

10M

100M

1G

10G

100G

Thick Film

Anti Sulphur

Gp

ASC

Power MELF

Sg

CHP

Professional chip

Hr

CR

Trimmable chip

Gp

CRT

Double-sided chip

Sg

DSC

Adhesive Attach

Gp

GCR

High value chip

Hv

HR

High temperature

Hp

HTCR

High voltage chip

Hv

HVC

Lower range HVC

Hv

LHVC

Current sense sm.

Cs

LRCS

Current sense

Cs

LR(F)

Current sense 3W

Cs

LRF3W

High current link

Zo

LRZ

Semi-precision

Pr

PCR

PTC sensor chip

Ts

PTCR

Pulse chip

Sg

PWC

Power chip 3W

Hp

SC3

General chip

Gp

WCR

Power chip

Hp

WHPC

TO263 power

Hp

WSMHP

Thin Film

Precision chip

Gp

GPCF

Precision chip

Pr

PCF

High temp. PCF

Pr

PCFH

Passivated PCF

Hr

PCFP

Platinum sensor

Ts

PTS

MELF

Pr

WRM

TaN Thin Film

Divider / array

Pr

DIV23

Precision chip

Hr

PFC

Divider chip

Pr

PFC-D

High temp. PFC

Pr

PFCHT

Wirebond chip

Pr

WBC

Hi-rel precision

Pr

WIN

Metal Alloy

Flat chip

Cs

LRMA

Open air J-lead

Cs

OARS

Flat chip

Cs

ULR

Wirewound

Moulded w/w

Hp

WSM

ZI-form w/w

Hp

WP-SZI

Cs: Current Sense

Fu: Fusible

Gp: General Purpose

Hp: High Power

Hr: High Reliability

Hv: High Value / Voltage

Pr: Precision

Sg: Surge / Pulse

Ts: Temperature Sensor

Zo: Zero-ohm Jumper

Resistors

3

Technology and Product Selector Guides

Through-hole 

& Off-PCB

Products

Power (W)

LEV (V)

TCR (ppm/°C)

Tol. (%)

Value (

Ω

)

C

at

egory

Series

0.01

0.1

1

10

100

10

100

1000

10K

100K

≤5

10 - 15

25

50

≥100

≤0.1

0.25- 0.5

1 - 2

≥5

R001

R01

R1

1R

10R

100R

1K

10K

100K

1M

10M

100M

1G

10G

100G

Thick Film

Ultra-high ohmic

100T

→

Hv

3810

HV SIL resistor

Hv

4500

HV SIL divider

Hv

4530

Power SIL

Hp

BPC

Compact HV axial

Hv

GC

HV divider

Hv

HVD

Compact HV SIL

Hv

HVP

Precision SIL div.

Hv

PHVD

Precision SIL res.

Hv

PHVP

Pulse planar

Sg

PWP

Robust HV divider

Hv

RHVD

Ultra-HV axial

Hv

T

¼ – 1W HV axial

Hv

VRW

Steel power res.

Hp

WDBR

Precision HV axial

Hv

WHVL

TO220/247 power

Hp

WMHP

Metal Film

High precision

Pr

CAR

UL1412 inrush

Fu

EMC

Ultra precision

Pr

MAR

Small flameproof

Hp

MFP

Professional film

Hr

MFR

0.6W 0207 film

Gp

MFR4P

Flameproof film

Hp

MF-S

High voltage film

Hv

MH

Semi-precision

Pr

PR

Precision

Pr

RC

Power precision

Pr

RCP

Metal Oxide

Ceramic box vert.

Hp

SQM 1of2

Ceramic box hor.

Hp

SQP 1of2

Flameproof coat

Hp

WMO-S

Carbon Comp

Moulded axial

Sg

CC

Wirewound

Vitreous tubular

Hp

1600

Low val. hor. box

Cs

PLO

Low val. vert. box

Cs

PWRL

UL1412 fibre core

Fu

SPP

UL1412 molded

Fu

SP20F

Ceramic box vert.

Hp

SQM 2of2

Ceramic box hor.

Hp

SQP 2of2

UL1412 inrush

Fu

ULW

Vitreous axial

Hp

W20

Flameproof pulse

Sg

W30

Flameproof fusing

Fu

WA84F

Al clad power

Hp

WH

High surge

Sg

WHS

Ceramic box rad.

Hp

WPRT

Flameproof coat

Sg

WP-S

Capacitor mount

Hv

WPYP

Metal Alloy

Low value axial

Cs

LOB

Low value open

Cs

OAR

0207 & wire links

Zo

WL4

Metal Foil

Ultra precision

Pr

4800

Cs: Current Sense

Fu: Fusible

Gp: General Purpose

Hp: High Power

Hr: High Reliability

Hv: High Value / Voltage

Pr: Precision

Sg: Surge / Pulse

Ts: Temperature Sensor

Zo: Zero-ohm Jumper

Resistors

4

LRCS/LVC Series

Small Size Low Value Chip Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, w, h

0402

0.063

R05 – 1R0

1, 5

-

200 – 400

1, 0.5, 0.32

0603

0.1

R02 – 1R0

1, 5

-

200 – 600

1.6, 0.8, 0.45

0805

0.125, 0.25

R02 – 1R0

1, 5

-

200 - 600

2, 1.25, 0.55

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LRCS.pdf

Resistors

5

Current Sense

LRF3W Series 

Low Range 3 Watt SMT Chip Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

LRF3W

3

0R003 - 1R

to ±1%

50

±100 

3.25, 6.5, 0.9 

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LRF3W.PDF

AEC-Q200

LOB Series

Low Resistance Metal Element Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, Dia

LOB-1

1

0.005 - 0.1

1 - 5

-

-

9.9, 3.6

LOB-3

3

0.005 - 0.1

1 - 5

-

-

14.2, 5.3

LOB-5

5

0.005 - 0.1

1 - 5

-

-

23.4, 8.4

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LOB.PDF

PLO Series

Low Resistance Power Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

PLO-3

3

R005 - R18

1, 2, 3, 5, 10

-

30 - 500

22.4, 7.87, 7.87

PLO-5

5

R005 - R18

1, 2, 3, 5, 10

-

30 - 500

22.4, 9.65, 8.89

PLO-7

7

R01 - R18

1, 2, 3, 5, 10

-

30 - 500

35.3, 9.65, 8.89

PLO-10

10

R01 - R18

1, 2, 3, 5, 10

-

30 - 500

47.8, 9.65, 8.89

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PLO.PDF

OAR Series

Open Air Sense Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

OAR-1

1

R003 – R1

1, 5

-

to ±20

11.43, 1.65, 8.26

OAR-3

3

R002 – R1

1, 5

-

to ±20

15.24, 1.65, 28.58

OAR-5

5

R003 – R05

1, 5

-

to ±20

20.32, 1.65, 28.58

Datasheet - http://www.ttelectronicsresistors.com/datasheets/OAR.PDF

LR (F) Series

Low Value Flat Chip Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

1206

0.5

0R003 - 1R

1, 2, 5

-

±100

3.2, 1.63, .8

2010

1.0

0R003 - 1R

1, 2, 5

-

±100

5.23, 2.64, .8

2512

1.5/2.0

0R003 - 1R

1, 2, 5

-

±100

6.5, 3.25, .8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LR.pdf

AEC-Q200

LRMA Series

Low Resistance Metal Alloy Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

M 0805

0.5

R005 – R025

1, 5

-

100

2, 1.25, 0.4

N 0612

1

R001 – R003

1, 5

-

100

1.7, 3.2, 0.6

N 0815

1

R003 – R03

1, 5

-

100

2.1, 3.75, 0.5

M 1206

1

R001 – R05

1, 5

-

50

3.2, 1.6, 0.5

T 2010

1.5

R005 – R1

1, 5

-

75, 100, 275

5, 2.5, 0.6

M 2512

1 – 2

R0005 – R06

1, 5

-

75, 100, 275

6.4, 3.2, 0.9-2.6

T 2512

1 – 2

R001 – R1

1, 5

-

75, 100, 275

6.4, 3.2, 0.9-2.0

P 2512

3

R0005 – R3

1, 5

-

50

6.4, 3.2, 0.9-2.0

P 3920

5

R0002 – R002

1

-

50 - 200

10, 5.2, 2

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LRMA.PDF 

& http://www.ttelectronicsresistors.com/datasheets/LRMA3920.pdf

AEC-Q200

OARS / OARS-XP Series 

Surface Mount Sense Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

OARS1

2

0R003 to

0R050

1

-

±20

11.18, 3.175, 3.05

OARSXP

5

0R001 to

0R025

1, 5

-

±20

12, 6.4, 4.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/OARS.PDF

AEC-Q200

PWRL Series

Low Resistance Stand-up Power Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, 

PWRL

3, 5, 7, 10

0R01 - 0R18

1, 2, 3, 5, 10

-

50 - 500

25.4, 12 (3W) 

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PWRL.PDF

Resistors

6

High Value / Voltage

3810 Series

Ultra-High Value Precision Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

3810

-

100M - 1T

10, 20

500

-500 to -3500

25, 6

3811

-

100M - 1T

1, 2, 5, 10

1000

-500 to -3500

42.9, 6

3812

-

1T - 100T

2, 5, 10

1000

-500 to -3500

48, 6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/3810.PDF

4500 Series

High Voltage Planar Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

4501

1

20K - 500M

1, 2, 5

10000

100, 150

25.7, 2, 9

4502

1.7

36K - 750M

1, 2, 5

10000

100, 150

25.7, 2, 13

4503

2

36K - 750M

1, 2, 5

15000

100, 150

38.7, 2, 9

4504

3

62K - 1G

1, 2, 5

15000

100, 150

38.7, 2, 13

4505

2.8

51K - 1G

1, 2, 5

20000

100, 150

51.2, 2, 9

4506

3.6

82K - 1G

1, 2, 5

20000

100, 150

51.2, 2, 13

4507

4.5

180K - 1.5G

1, 2, 5

20000

100, 150

51.2, 2, 25.7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/4500.PDF

4530 Series

High Voltage Planar Dividers

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

4531

1.0

20K - 130M

1, 2, 5

6500

100

25.7, 2, 9

4532

1.7

36K - 250M

1, 2, 5

6500

100

25.7, 2, 13

4533

2.0

36K - 250M

1, 2, 5

10000

100

38.7, 2, 9

4534

3.0

62K - 450M

1, 2, 5

10000

100

38.7, 2, 13

4535

2.8

51K - 370M

1, 2, 5

15000

100

51.2, 2, 9

4536

3.6

82K - 660M

1, 2, 5

15000

100

51.2, 2, 13

4537

4.5

180K - 1.4G

1, 2, 5

15000

100

51.2, 2, 25.7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/4530.PDF

ULR Series

Metal Strip Current Sense Resistors Surface Mount

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

ULR1S

1

R0005 - R01

1, 5

-

50

3.2, 1.6, 0.6

ULR1

1.0

R0005 - R022

1, 5

-

50, 75, 100, 150

6.4, 3.2, 1.4

ULR15S

1.5

R0005 - R01

1, 5

-

50

5.1, 2.5, 0.6

ULR2

2.0

R0005 - R01

1, 5

-

50

6.4, 3.2, 1.4

ULR25

2.5

R0035 - R006

1, 5

-

50

6.4, 3.2, 1.4

ULR3

3.0

R0005 - R003

1, 5

-

50, 75, 100

6.4, 3.2, 1.4

Datasheet - http://www.ttelectronicsresistors.com/datasheets/ULR.PDF

AEC-Q200

GC Series

High Value Thick Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

GC55

0.25

47K - 1G

1, 2, 5

1700

100

6.2, 2.5

GC65

0.5

47K - 1G

1, 2, 5

3500

100

9, 3.6

GC70

1.0

47K - 1G

1, 2, 5

10000

100

14.5, 5.3

Datasheet - http://www.ttelectronicsresistors.com/datasheets/GC.PDF

HR Series

High Value Surface Mount Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0503

-

10M - 20G

10

50

0 to -2500

1.25, .63, .5

0805

-

100M - 50G

10

100

0 to -2000

2, 1.25, .6

1005

-

100M - 50G

10

150

0 to -1500

2.5, 1.25, .7

1206

-

100M - 50G

10

200

0 to -1000

3.2, 1.6, .7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/HR.PDF

Resistors

7

RHVD Series

Robust High Voltage Divider Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, h, w

RHVD08

0.5

10K – 1G0

0.25, 0.5, 1

7,500

25, 50

25.4, 9.2, 5

RHVD10

0.75

50K – 1G0

0.25, 0.5, 1

10,000

25, 50

38.1, 9.2, 5

RHVD10A

1

100K – 1G0

0.25, 0.5, 1

10,000

25, 50

38.1, 13.4, 5

RHVD15

1.5

100K – 1G0

0.25, 0.5, 1

15,000

25, 50

50.8, 9.2, 5

RHVD15A

2

100K – 1G0

0.25, 0.5, 1

15,000

25, 50

50.8, 15.9, 5

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/RHVD.pdf

T Series

High Voltage Precision Thick Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

T43

1.5

10K - 10G

1, 2, 5

4000

25, 50, 100

25.4, 8.4

T44

3.5

10K - 50G

1, 2, 5

14000

25, 50, 100

50.8, 8.4

T48

10

33K - 50G

1, 2, 5

50000

25, 50, 100

150, 8.4

Datasheet - http://www.ttelectronicsresistors.com/datasheets/T40.pdf

HVP Series

High Voltage Planar resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, w, h

HVP04

0.4

1K – 250M

0.25, 0.5, 1, 5

2000

25, 50, 100

10.2, 6.4, 2

HVP06

0.6

1K5 – 1G0

0.25, 0.5, 1, 5

5000

25, 50, 100

12.7, 6.4, 2

HVP08

0.8

2K – 1G0

0.25, 0.5, 1, 5

7500

25, 50, 100

19.1, 6.4, 2

HVP10 

1

3K – 2G0

0.25, 0.5, 1, 5

10,000

25, 50, 100

25.4, 6.4, 2

HVP15 

1.5

4K – 5G0

0.25, 0.5, 1, 5

15,000

25, 50, 100

38.1, 6.4, 2

HVP20 

2

5K – 10G

0.25, 0.5, 1, 5

20,000

25, 50, 100

50.8, 6.4, 2

Datasheet - http://www.ttelectronicsresistors.com/datasheets/HVP.pdf

MH Series

High Voltage Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

MH25

0.25

100K - 10M

1, 2, 5

1600

100

6.2, 2.3

MH37

0.5

100K - 1M

1, 2, 5

3500

100

9, 3.7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MH.PDF

LHVC Series

Lower Range High Voltage Chip

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, w, h

0603

0.1

100K - 10M

1, 5

200

200

1.6, 0.8, 0.45

0805

0.125

100K – 10M

1, 5

400

200

2, 1.3, 0.55

1206

0.25

100K – 10M

1, 5

500

200

3.1, 1.6, 0.55

2010

0.5

50K – 10M

1, 5

1600

200

5, 2.5, 0.55

2512

1

50K - 10M

1, 5

2000

200

6.4, 3.2, 0.55

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LHVC.pdf

HVC Series

High Voltage Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

1206

0.3

10K - 1G0

10, 5, 2, 1, 0.5

1000

50, 100

3.2±0.4, 1.6±0.2, 0.7

2010

0.5

10K - 1G0

10, 5, 2, 1, 0.5

2000

50, 100

5.1±0.3, 2.5±0.2, 0.8

2512

1

10K - 1G0

10, 5, 2, 1, 0.5

3000

50, 100

6.5±0.3, 3.2±0.2, 0.8 

Datasheet - http://www.ttelectronicsresistors.com/datasheets/HVC.PDF

Anti-Sulphur Option

HVD Series

High Voltage Divider Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

HVD08

0.75

10K – 1G0

0.25, 0.5, 1

7,500

25, 50

25.4, 2.5, 9.4

HVD12

1.5

50K – 2G0

0.25, 0.5, 1

10,000

25, 50

38.1, 2.5, 13.6

HVD15

2.5

100K – 2G0

0.25, 0.5, 1

15,000

25, 50

50.8, 2.5, 16.1

HVD20

3.5

100K – 5G0

0.25, 0.5, 1

20,000

25, 50

76.2, 2.5, 16.1

HVD30

4.5

100K – 5G0

0.25, 0.5, 1

30,000

25, 50

101.6, 2.5, 16.1

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/HVD.pdf

Resistors

8

PHVD Series

Precision High Voltage Divider

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, h, w

PHVD10

0.75

1K – 7G

0.1, 0.25, 0.5, 1

10,000

25, 50

25.4, 7.6, 2.5

PHVD15

1.5

1K – 10G

15,000

38.1, 12.7, 2.5

PHVD20

2.5

1K – 20G

20,000

50.8, 15.2, 2.5

PHVD30

3.5

1K – 30G

30,000

76.2, 15.2, 2.5

PHVD40

4.5

1K – 40G

40,000

101.6, 15.2, 2.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PHVD.PDF

PHVP Series

Precision High Voltage Planar Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm) l, h, w

PHVP5

1

1K – 3G

0.1, 0.25, 0.5, 1

5000

15, 25, 50

12.7, 5.1, 2

PHVP7

0.8

1K – 1G

7000

20.3, 3.8, 2

PHVP7B

1

1K – 2G5

7000

20.3, 5.1, 2.5

PHVP10

1

1K – 1G5

10,000

25.4, 3.8, 2

PHVP10B

1.3

1K – 3G5

10,000

25.4, 5.1, 2.5

PHVP10C

2

1K – 7G

10,000

25.4, 7.6, 2.5

PHVP15

1.5

1K – 4G

15,000

38.1, 3.8, 2

PHVP15B

2

1K – 5G

15,000

38.1, 5.1, 2.5

PHVP15C

3

1K – 10G

15,000

38.1, 12.7, 2.5

PHVP20

2

1K – 7G

20,000

50.8, 5.1, 2

PHVP20B

3

1K – 10G

20,000

50.8, 6.4, 2.5

PHVP20C

4.5

1K – 20G

20,000

50.8, 15.2, 2.5

PHVP30

6.5

1K – 30G

30,000

76.2, 15.2, 3

PHVP40

9

1K – 40G

40,000

101.6, 15.2, 3

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PHVP.PDF

WHVL Series

Precision Low Inductance High Voltage Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, dia

WHVL2

2.9

1K – 100G

0.1, 0.25, 0.5, 1

11,000

15, 25, 50

27, 8

WHVL3

3.8

1K – 100G

14,000

37, 8

WHVL5

5.6

1K – 100G

22,000

52, 8

WHVL7

7.5

1K – 100G

33,000

77, 8

WHVL10

10

1K – 100G

45,000

102, 8.3

WHVL12

12

1K – 100G

54,000

122, 8.5

WHVL15

15

1K – 100G

67,000

152, 8.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WHVL.PDF

Surge / Pulse

CC Series

Carbon Composition Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, dia

CC1

1

100R – 50K

10, 20

-

1000

15, 6

CC2

2

100R – 10K

10, 20

-

1000

18, 8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/CC.pdf

CHP Series

Metal Glaze™ Surface Mount Power Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

CHP1/8

0.25

0R1 - 1M

1, 2, 5

200

50, 100

3.25, 1.45

CHP1/2

0.5

0R1 - 350K

1, 2, 5

300

50, 100

5.08, 2.01

CHP1

1

0R1 - 2M2

1, 2, 5

350

50, 100

6.38, 2.10

CHP2

1.33

0R1- 2M2

1, 2, 5

500

50,100

9.32, 2.67

Datasheet - http://www.ttelectronicsresistors.com/datasheets/CHP.PDF

VRW Series

High Voltage Thick Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) L, D

VRW25

0.25

100K to 30M

1, 2, 5

1600

200

6.2, 2.5

VRW37

0.5

100K to 10M

1, 2, 5

3500

200

9.0, 3.7 

VRW68

1

100K – 68M

1, 2, 5

10000

200

15.5, 5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/VRW.PDF

WPYP Series

Capacitor Mount Balance/ Bleed Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm) Pitch

WPYP8

10

1R0 – 82K

1, 2, 5

685

100

22

WPYP10

13

1R0 – 120K

1, 2, 5

940

100

31.8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WPYP.pdf

Resistors

9

1600/1900 Series

Tubular Vitreous Enamelled Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

1601

11

1 - 15K

1, 2, 5, 10

250

75 - 200

33, 17.5

1905

16

1 - 30K

1, 2, 5, 10

450

75 - 200

56.1, 14.5

1600

16.5

1 - 56K

1, 2, 5, 10

600

75 - 200

61.5, 14.5

1602

17

1 - 43K

1, 2, 5, 10

500

75 - 200

51, 17.5

1906

22

1 - 50K

1, 2, 5, 10

700

75 - 200

64.3, 17.5

1603

25

1 - 83K

1, 2, 5, 10

850

75 - 200

74.5, 17.5

1604

35

1 - 100K

1, 2, 5, 10

1300

75 - 200

102, 17.5

1605

47

1 - 100K

1, 2, 5, 10

1100

75 - 150

89.5, 24

1908

54

1 - 100K

1, 2, 5, 10

1200

75 - 150

102, 24

1607

76

1 - 100K

1, 2, 5, 10

1300

75 - 150

102, 32

1606

91

1 - 160K

1, 2, 5, 10

2100

75 - 150

166, 24

1608

115

1 - 180K

1, 2, 5, 10

2100

75 - 150

152, 32

1609

165

1 - 250K

1, 2, 5, 10

3000

75 - 150

216, 32

Datasheet - http://www.ttelectronicsresistors.com/datasheets/1600-1900.PDF

High Power

WP-S Series

Compact Flameproof Power Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

WP1S

1

R068 to 430R

<20r: 5  20R: 1,2,5

50

<1R: 350    1R: 200

6.2, 2.8

WP2S

2

R05 to 900R

<20r: 5  20R: 1,2,5

50

<1R: 350    1R: 200

9.0, 3.6

WP25S

2.5

R05 to 900R

<20r: 5  20R: 1,2,5

75

<1R: 350    1R: 200

12.5, 4.5

WP3S

3

R01 to 2K2

<20r: 5  20R: 1,2,5

100

<1R: 350    1R: 200

14.5, 5.2

WP4S

4

R01 to 10K

<R10:5  R10: 1,2,5

100

<1R: 350    1R: 200

13, 5.6

WP5S

5

R015 to 6K8

<20r:5  20R: 1,2,5

150

<1R: 350    1R: 200

16.5, 7.0

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WP-S.PDF

 W30 Series

Flameproof Wirewound Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

W31

3

R01 – 10K

<R1: 5 

 ≥R1: 1, 2, 5

500

100 - 1000

13, 5.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/W30.PDF

PWP Series

Pulse Withstanding Planar Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

PWP04

0.4

100R – 200K

1, 5

-

±100

10.16, 2, 6.35

PWP06

0.6

100R – 200K

1, 5

-

±100

12.7, 2, 6.35

PWP08

0.8

100R – 200K

1, 5

-

±100

17.78, 2, 6.35

PWP10

1

100R – 200K

1, 5

-

±100

24.4, 2, 6.35

PWP15

1.5

100R – 200K

1, 5

-

±100

38.1, 2, 6.35

PWP20

2

100R – 200K

1, 5

-

±100

50.8, 2, 6.35

Datasheet - 

http://www.ttelectronicsresistors.com/datasheets

/PWP.PDF

WHS Series

Wirewound High Surge Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim(mm) l,dia

WHS2

2

1R0 – 330R

1, 2, 5

-

±200

9, 3.6

WHS3

3

1R0 – 330R

1, 2, 5

-

±200

14.5, 5.2

WHS5

5

1R0 – 330R

1, 2, 5

-

±200

16.5, 7

WHS7

7

1R0 – 330R

1, 2, 5

-

±200

25, 8.8

WHS10

10

2R2 – 330R

1, 2, 5

-

±200

51, 10.5

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/WHS.PDF

PWC Series

Pulse Withstanding Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0805

0.25

1R0 - 10M

0.5, 1, 2, 5

150

 100 - 200

2.0,1.25, 0.7

1206

0.33

1R0 - 10M

0.5, 1, 2, 5

200

100 - 200

3.2, 1.6, 0.7

2010

0.75

1R0 - 10M

0.5, 1, 2, 5

400

100 - 200

5.1, 2.5, 0.8

2512

1.5

1R0 - 10M

0.5, 1, 2, 5

500

100 - 200

6.5, 3.2, 0.8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PWC.PDF

Anti-Sulphur Option

DSC Series

Double Sided Chip

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0805

0.25

1R0 - 1M0

0.5, 1, 2, 5

150

 100 - 200

2.0,1.25, 0.7

1206

0.33

IR0 - 4M7

0.5, 1, 2, 5

200

100 - 200

3.2, 1.6, 0.7

2010

0.75

IR0 - 4M7

0.5, 1, 2, 5

400

100 - 200

5.1, 2.5, 0.8

2512

1.5

IR0 - 4M7

0.5, 1, 2, 5

500

100 - 200

6.5, 3.2, 0.8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/DSC.PDF

Anti-Sulphur Option

Resistors

10

BPR  Series                                                                                                           

Vibration-proof Planar Power Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, h, t

BPR3

3

0R1 - 200K

1, 2, 5

500

100

12.7, 17, 6.1

BPR5

5

0R1 - 200K

1, 2, 5

500

100

12.7, 27.2, 6.1

BPR7

7

0R1 - 200K

1, 2, 5

500

100

25.4, 20.8, 6.1

BPR10

10

0R1 - 200K

1, 2, 5

500

100

25.4, 27.2, 6.1

BPR30

30

0R1 - 200K

1, 2, 5

500

100

53.3, 37.3, 6.1

Datasheet - http://www.ttelectronicsresistors.com/datasheets/BPR.PDF

MFP Series

Flameproof Power Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

MFP1

1

0R1 - 1M

1, 2, 5

350

100, 200, 300

6.2, 2.5

MFP2

2

1R0 - 1M

1, 2, 5

350

100

10, 4

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MFP.PDF

BPC  Series                                                                                                           

Planar Power Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, h, t

BPC3

3

0R1 - 200K

1, 2, 5, 10

500

100

10.2, 27.7, 2.5

BPC5

5

0R1 - 200K

1, 2, 5, 10

500

100

12.7, 27.7, 2.5

BPC7

7.5

0R1 - 200K

1, 2, 5, 10

500

100

19.1, 27.7, 2.5

BPC10

10

0R1 - 200K

1, 2, 5, 10

500

100

25.4, 27.7, 2.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/BPC.PDF

HTCR Series

High Temperature Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, h, t

0805

0.125

1R0 - 10M

1, 5

150

100 - 200

2, 1.3, 0.5

1206

0.25

1R0 - 10M

1, 5

200

100 - 200

3.2, 1.6, 0.5

2010

0.625

1R0 - 10M

1, 5

400

100 - 200

5, 2.5, 0.65

2512

1

1R0 - 10M

1, 5

500

100 -200

6.3, 3.2, 0.65

Datasheet - http://www.ttelectronicsresistors.com/datasheets/HTCR.PDF

MF-S Series

Power Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

MF1/2S

0.5

0R1 - 1M

1, 2, 5, 10

350

150 - 350

6.2, 2.5

MF1S

1.0

0R1 - 1M

1, 2, 5, 10

350

150 - 350

9, 3.6

MF2S

2.0

0R1 - 1M0

1, 2, 5, 10

350

150 - 350

12.5, 4.2

MF3S

3.0

0R1 - 1M0

1, 2, 5, 10

350

150 - 350

14.5, 5.3

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MF-S.PDF

SC3 Series

High Power Chip Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

SC3

3

1R0 - 10K

1, 2, 5

50

100

3.25, 6.5, 

Datasheet - http://www.ttelectronicsresistors.com/datasheets/SC3.PDF

AEC-Q200

SQM Series

Ceramic Case Pluggable Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

h, w, d

SQM2

2

0R1 – 33K

5

150

350, 400

20, 11.5, 7.5

SQM3

3

0R1 – 56K

5

300

350, 400

25, 12.5, 8.5

SQM5

5

0R1 – 100K

5

350

350, 400

25, 12.5, 9

SQM7

7

0R1 – 200K

5

500

350, 400

38, 12.5, 9

SQM10

10

0R1 – 200K

5

750

350, 400

50, 12.5, 9

Datasheet - http://www.ttelectronicsresistors.com/datasheets/SQM.pdf

SQP Series

Ceramic Case Resistors - Wirewound / Metal Oxide

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

SQP2

2

0R1-120K

5

-

350

18, 7, 7

SQP3

3

0R1-150K

5

-

22, 8, 9

SQP5

5

0R1 - 150K

5

-

22, 10, 9

SQP7

7

0R1 - 200K

5 

-

35, 10, 9

SQP10

10

0R1 - 200K

5 

-

49, 10, 9

SQP15

15

1R0- 200K

5 

-

49, 12.5, 11.5

SQP20

20

2R0-200K

5 

-

60, 14.5, 13.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/SQP.PDF

WHPC Series

High Power Chip

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, w, h

1206

0.5

1R – 10M

1, 5

200

100 – 200

3.1, 1.6, 0.55

0612 

0.5

1R – 1M

1, 5

200

100 - 400

1.6, 3.2, 0.55

2010

1

1R – 10M

1, 5

200

100 - 200

5, 2.5, 0.55

1020 

1

1R – 1M

1, 5

200

100 - 400

2.5, 5, 0.55

1218 

1

1R – 1M

1, 5

200

100 - 400

3.1, 4.6, 0.55

1225 

1.5

1R – 1M

1, 5

200

100 - 400

3.1, 6.3, 0.55

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WHPC.pdf

 Resistors

11

WDBR Series

Ultra Low Profile Dynamic Braking Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w

WDBR1/2

300

22R – 100R

10

-

+500 - +600

31.9, 28.1

WDBR1

700

12R – 150R

10

-

+500 - +600

49.3, 35.9

WDBR2

780

12R – 150R

10

-

+500 - +600

61, 40.6

WDBR3

900

12R – 150R

10

-

+500 - +600

102, 70

WDBR5

1000

12R – 150R

10

-

+500 - +600

122, 70

WDBR7

1490

47R – 150R

10

-

+500 - +600

152, 102

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WDBR.PDF

WH Series

Aluminium Housed Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

WH5

10

0R01 - 10K

1, 2, 5, 10

150

50, 100

30, 17, 9

WH10

15

0R01 - 20K

1, 2, 5, 10

250

50, 100

36.5, 21, 11

WH25

25

0R01 - 44K

1, 2, 5, 10

500

50, 100

51, 28, 15

WH50

50

0R015 - 120K

1, 2, 5, 10

1250

50,100

72.5, 30, 16

WH100

100

0R01 – 70K

1, 2, 5, 10

1900

25, 100

88, 47.5, 24.1

WH200

200

0R01 – 50K

1, 2, 5, 10

1900

25, 100

146, 72.5, 41.8

WH300

300

0R01 – 68K

1, 2, 5, 10

2500

25, 100

184, 72.5, 41.8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WH.PDF

SnPb Option

CECC 40203-006

W20 Series

Vitreous Enamelled Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

W21

3.0

0R1 - 10K

1, 2, 5

100

+75 to 200

12.7, 5.6

W215

5.0

0R1 - 15K

1, 2, 5

160

+75 to 200

22, 7

W22

7.0

0R1 - 22K

1, 2, 5

200

+75 to 200

22, 8

W23

10.5

0R15 - 60K

1, 2, 5

500

+75 to 200

38, 8

W24

14.0

0R2 - 100K

1, 2, 5

750

+75 to 200

53.5, 8

Datasheet -http://www.ttelectronicsresistors.com/datasheets/W20.PDF

SnPb Option

CECC 40201-002

WMHP Series

Heatsink Mount High Power Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

WMHP20

20

R05 – 10K

1, 5

350

50

14.8, 10.1, 4.4

WMHP35

35

R05 – 10K

1, 5

350

50

14.8, 10.1, 4.4

WMHP50

50

R05 – 10K

1, 5

350

50

14.8, 10.1, 4.4

WMHP100

100

R05 – 10K

1, 5

700

50

20.7, 15.8, 5.0

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WMHP.pdf

 4800  Series

Ultra Precision Bulk Metal Foil Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

4802/12/32

0.5

1R0 to 100K

0.005, 0.01

0.02, 0.05

0.01, 0.25, 0.5, 1

200

5

8.9, 10.2, 3.8, 7.5, 8, 2.5

9.7 5.4 9.7

4804

1

0R5 to 200k

350

5

15.2, 13.2, 3.8

4805

1.5

33R0 to 300K

500

5

22.6, 13.2, 3.8

Datasheet - http://www.ttelectronicsresistors.com/datasheets/4800.PDF

Precision

Resistors

12

CAR Series

Ultra Precision Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

CAR5

0.25

10R0 - 3M

0.01, 0.02,

0.05, 0.1,

1.0

250

5, 10,

15, 25,

50

7.2, 2.5

CAR6

0.33

10R0 - 5M

350

10, 3.7

CAR7

0.5

10R0 - 10M

500

15.5, 5.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/CAR.PDF

WSM Series

Moulded Surface Mount Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

WSM1

1

0R01 - 1K

1, 2, 5, 10

100

20 - 100

7.9, 7, 3.94

WSM2

2

0R01 - 2K

1, 2, 5, 10

100

20 - 100

12, 10.5, 5.5

WSM3

3

0R01 - 3K

1, 2, 5, 10

100

20 - 200

18, 16, 6.5 

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WSM.PDF

WMO-S Series

Flameproof Metal Oxide Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

WMO1/2S

0.5

10R -100K

5

250

350

7.5, 3

WMO1S

1.0

10R - 120K

5

350

350

10, 4.5

WMO2S

2.0

10R - 150K

5

350

350

12, 5

WMO3S

3.0

10R - 150K

5

350

350

16, 5.5

WMO5S

5.0

10R - 180K

5

500

350

26, 8.5

WMO7S

7

20R - 150K

5

750

350

32, 8.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WMO-S.PDF

WPRT Series

Wirewound Power Radial Terminal Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

WPRT10

10

1R0 – 820R

5

-

±350

48, 10, 9

WPRT15

15

1R0 – 1K0

5

-

±350

48, 12.5, 11.5

WPRT20

20

2R0 – 1K2

5

-

±350

63, 12.5, 13.5

WPRT30

30

3R0 – 1K5

5

-

±350

75, 19, 19

WPRT40

40

6R0 – 1K5

5

-

±350

90, 19, 19

WPRT50

50

6R0 – 1K5

5

-

±350

90, 19, 19

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WPRT.PDF

AEC-Q200

WP-SZI  Series

Cement Coated Surface Mount Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

WP2SZI

2

0.05 - 900R

<0R1:5,10

50

<1R: 350   1R: 200 

14.8, 3.6, 6.5 

WP3SZI

3

0.01 - 2K2

0R1:1,2,5,10

100

<1R: 350   1R: 200

21, 5.2, 8.2

WP5SZI

5

0.015 - 6K8

1, 2, 5, 10

150

<1R: 350   1R: 200

21, 7.0, 8.2

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WP-S.PDF  http://www.ttelectronicsresistors.com/datasheets/ZI-FORM.PDF

DIV23 Series

Surface Mount Divider Network

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

DIV23

0.25

10R - 200K

0.05

100

Track ±5

2.9, 1.3, 1

Datasheet - http://www.ttelectronicsresistors.com/datasheets/DIV23.pdf

WSMHP Series

Surface Mount TO-263 Power Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

WSMHP20

20

0R5 – 100K

1, 5

500

50

10.1, 10.1, 4.6

WSMHP25

25

0R5 – 100K

1, 5

500

50

10.1, 10.1, 4.6

WSMHP35

35

0R5 – 100K

1, 5

500

50

10.1, 10.1, 4.6

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/WSMHP.pdf

AEC-Q200

Resistors

13

RCP Series

Precision Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

RC55P

0.5

1R - 4M

0.05, 0.1, 0.25, 0.5

350

5, 10, 15, 

25, 50, 100

7.2, 2.5

RC65P

1.0

1R - 4M

500

10, 3.7

RC70P

1.5

1R - 10M

500

15.5, 5.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/RCP.PDF

PCR Series

Precision Thick Film Surface Mount Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0805

0.1

10R - 1M

0.1 - 1

100

50

2, 1.25, .6

1005

0.125

10R - 1M

0.1 - 1

150

50

2.5, 1.25, .7

1206

0.25

10R - 1M

0.1 - 1

200

50

3.2, 1.6, .7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PCR.PDF

PFC-D  Series                                                                                                         

Precision 1206 Resistive Dividers

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, w, t

PFC-D

0.25

10R - 200K

0.05, 0.1, 0.5, 1

100

25, 50, 100

3.2, 1.6, 0.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PFC-D.pdf

SOT143 Series

4 Pin SMT Package

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

SOT

0.25

10R -100K

0.05

100

Track ±5

2.9, 1.3, 1

Datasheet - http://www.ttelectronicsresistors.com/datasheets/SOT143.pdf

WBC Series

TaNSil® Wire Bondable Silicon Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0202

0.25

10R - 400K

to 0.05

100

±25

0.51, 0.51

0303

0.25

21R - 800K

to 0.05

100

Track 2

0.76, 0.76

Datasheet - 

 

http://www.ttelectronicsresistors.com/datasheets/WBC.PDF

PR Series

Precision Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

PR4

0.25

100R - 1M

0.1, 0.25,

0.5, 1

250

15, 25, 50

6.2, 2.5

PR5

0.5

100R - 1M

350

15, 25, 50

9, 3.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PR.PDF

RC Series

Precision Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

RC55

0.25

1R - 4M

0.05, 0.1, 0.25, 0.5

350

5, 10, 15, 

25, 50, 100

7.2, 2.5

RC65

0.5

1R - 4M

350

10, 3.7

RC70

1.0

1R - 10M

500

15.5, 5.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/RC.PDF

SnPb Option

CECC 40101-004/804

MAR 40/42 Series

Ultra Precision Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

MAR 40

0.3

20R0 - 400K

0.005, 0.01

0.02, 0.05

0.01, 0.25, 0.5, 

250

2, 5

7.75, 3.3, 8.64

MAR 42

8.25, 3.3, 8.64

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MAR.pdf

PCF Series

Precision Surface Mount Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0201

0.031

50R - 33K

0.5, 1

15

25, 50

0.6, 0.3, 0.26

0402

0.063

4R7 - 511K

0.01 – 0.5

25

5 - 50

1, 0.5, 0.4

0603

0.063

1R – 1M

0.01 – 0.5

50

5 - 50

1.6, 0.8, 0.55

0805

0.1

1R – 2M

0.01 – 0.5

100

5 - 50

2, 1.3, 0.65

1206

0.125

1R – 2M5

0.01 – 0.5

150

5 - 50

3.2, 1.6, 0.65

1210

0.2

1R – 2M5

0.01 – 0.5

150

5 - 50

3.2, 2.6, 0.5

2010

0.25

1R – 3M

0.01 – 0.5

150

5 - 50

4.9, 2.4, 0.65

2512

0.5

1R – 3M

0.01 – 0.5

150

5 - 50

6.3, 3.1, 0.65

High Power (PCFH), Extended High Power (PCFX) and Passivated (PCFP) versions available

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PCF.pdf

AEC-Q200

 Resistors

14

WRM Series

Mini Melf Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

0102

0.125

4R7 – 110K

1

150

50

2.2, 1.35

0204

0.25

R22 - 5M1

0.1, 0.25, 

0.5, 1, 2, 5

200

5, 15, 25, 50, 100

3.7, 1.55

0207

0.4

R16 - 10M

250

25, 50, 100

6.1, 2.4

Datasheet - 

 

http://www.ttelectronicsresistors.com/datasheets/WRM.PDF

Fusible

WA84F Series 

Fusible Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

WA84F

1.6

0R2 - 30R

5

100

100 - 350

14.5, 5.2

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WA84F.PDF

High Reliability

CR Series

Surface Mount Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0503

0.063

1R - 10M

0.1 - 5

50

100

1.25, .63, .5

0805

0.125

1R - 100M

0.1 - 5

100

100

2, 1.25, .6

1005

0.125

1R - 100M

0.1 - 5

150

100

2.5, 1.25, .7

1206

0.25

1R - 100M

0.1 - 5

200

100

3.2, 1.6, .7

2010

0.5

1 - 1M

0.1 - 5

400

100

5.1, 2.5, .7

2512

1.0

1 - 1M

0.1 - 5

500

100

6.5, 3.2, .7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/CR.PDF

SnPb Option

CECC 40401-003/004/008

EMC Series

Pulse Withstanding Fusible Flameproof Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

EMC2

2

4R7 - 68R

10, 20

-

100

10, 4

Datasheet - 

 

http://www.ttelectronicsresistors.com/datasheets/EMC.PDF

UL1412

SPP Series

Fibre Core Conformal Coated Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

SPP-1

1

0R1 – 1K2

5, 10

-

±300

10.2, 3.8

SPP-2

2

0R1 – 2K4

5, 10

-

±300

14.5, 4.3

SPP-3

3

0R1 – 2K4

5, 10

-

±300

14.5, 4.3

 

http://www.ttelectronicsresistors.com/datasheets/spp.pdf

ULW Series

UL1412 Wirewound Mains Input Resistor

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim. (mm)

l, dia

ULW2

2

4R7 - 100R

5

-

200

9, 3.6

ULW3

3

4R7 - 100R

5

-

200

14.5, 5.2

ULW4

4

4R7 - 100R

5

-

200

13, 5.6

ULW5

5

4R7 - 100R

5

-

200

16.5, 7.2

http://www.ttelectronicsresistors.com/datasheets/ULW.pdf

UL1412

UL1412

SP20F Series

Failsafe Molded Wirewound Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) I, dia

SP20F

1

0R1 – 1K0

5, 10

-

±150

9.91, 3.56

http://www.ttelectronicsresistors.com/datasheets/sp20-sp20f.pdf

UL1412

WIN Series

Water Insoluble Nitride Thin Film Precision Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

T0603

0.1

4R7 – 100K

0.05

75

15

1.58, 0.8, 0.45

T0805

0.25

4R7 – 267K

0.05

100

15

2.02, 1.28, 0.45

T1206

0.33

4R7 – 1M0

0.05

200

15

3.15, 1.57, 0.5

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/WIN.pdf

Anti-sulfur

Resistors

15

WL4 Series

Jumper Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

WL4

-

0.012 max

-

-

-

6.2, 2.3

WLT

Wire link taped, 0.6 / 0.7 / 0.8mm dia x 52mm

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WL4.PDF

PTS Series

Platinum Film Temperature Sensors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max 

Volts

TCR

(ppm/°C)

Dim.(mm) l, w, t

0603

-

1K0

0.12, 0.24

-

+3850

1.6, 0.8, 0.5

0805

-

100R & 1K0

0.12, 0.24

-

+3850

2.1, 1.3, 0.5

1206

-

100R & 1K0

0.12, 0.24

-

+3850

3.2, 1.6, 0.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PTS.PDF

PTCR Series

PTC Thermistor Chip

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim (mm) l, w, h

0805

0.1

10R - 400R

2, 5, 10

100

2200 - 3500

2, 1.25, 0.6

1206

0.2

10R - 800R

2, 5, 10

200

2200 - 3500

3.2, 1.6, 0.7

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PTCR.PDF

Temperature Sense

Zero-Ohm Jumper

PFC Series

TaNFilm® Precision Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0402

0.05

50R – 30K

0.1 - 5

75

25 - 100

1, 0.5, 0.3

0603

0.1

5R – 100K

0.02 - 5

75

10 - 100

1.6, 0.8, 0.5

0805

0.25

5R – 267K

0.02 - 5

100

10 - 100

2.1, 1.3, 0.5

1206

0.33

5R – 1M

0.02 - 5

200

10 - 100

3.2, 1.6, 0.6

1505

0.35

5R – 1M

0.02 - 5

100

25 - 100

3.9, 1.3, 0.6

2010

0.8

5R – 1M

0.02 - 5

175

25 - 100

5.2, 2.6, 0.6

2512

1

5R – 1M

0.02 - 5

200

25 - 100

6.5, 3.1, 0.6

High Temperature (PFC-HT) version available

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PFC.pdf

Datasheet - http://www.ttelectronicsresistors.com/datasheets/PFC-HT.pdf

SnPb Option

Anti – Sulphur Option

MIL-PRF-55342

MFR Series

Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

MFR3

0.4

1R0 - 1M

1

200

50

3.5, 1.8

MFR4

0.5

1R0 - 1M

0.5, 1

350

50

6.2, 2.5

MFR5

0.75

1R0 - 1M

0.5, 

350

100 - 150

9, 3.6

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MFR.PDF

SnPb Option

CECC 40101-019/803

LRZ Series

High Current Jumper Chip

Type

Current

(amps)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, t

0603

6

0.003 max

-

-

-

1.6, 0.8, 0.5

0805

15

0.003 max

-

-

-

2.0, 1.25, 0.61

1206

20

0.003 max

-

-

-

3.2, 1.25, 0.61

2010

30

0.003 max

-

-

-

5.23, 2.64, 0.74

2512

35

0.003 max

-

-

-

6.5, 3.25, 0.74

Datasheet - http://www.ttelectronicsresistors.com/datasheets/LRZ.pdf

AEC-Q200

Resistors

16

General Purpose

CRT Series

Trimmable Surface Mount Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0805

0.1

10R - 1M

±20

100

250

2, 1.25, .5

1206

0.125

10R - 1M

±20

200

250

3.2, 1.6, .55

Datasheet - http://www.ttelectronicsresistors.com/datasheets/CRT.PDF

MFR4P Series

Metal Film Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, dia

MFR4P

0.6

R22 - 1M

1, 2, 5,

250

50

6.2, 2.5

Datasheet - http://www.ttelectronicsresistors.com/datasheets/MFR4P.PDF

WCR Series

General Purpose Surface Mounted Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0201

0.05

10R – 1M

1

25

250

0.6, 0.3, 0.23

0402

0.1

1R – 1M

1

50

100

1, .5, .35

0603

0.063

1R – 10M

1

50

100

1.6, .8, .5

0805

0.125

1R – 10M

1

150

100

2, 1.25, .5

1206

0.25

1R – 10M

1

200

100

3.2, 1.6, .55

1210

0.25

1R – 10M

1

200

100

3.2, 2.6, 0.55

2010

0.5

1R – 10M

1

200

200

5, 2.5, .56

2512

1.0

1R – 10M

1

200

200

6.3, 3.2, .56

Datasheet - http://www.ttelectronicsresistors.com/datasheets/WCR.PDF

ASC Series

Anti Sulphur Chip Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0402

0.063

1R0 - 10M

1

50

100 – 200

1, 0.5, 0.35

0603

0.1

1R0 - 10M

1

50

100 – 200

1.6, 0.8, 0.45

0805

0.125

1R0 - 10M

1

150

100 – 200

2, 1.25, 0.5

1206

0.25

1R0 - 10M

1

200

100 – 200

3.1, 1.55, 0.55

1210

0.33

1R0 - 10M

1

200

100 - 200

3.2, 2.6, 0.55

2010

0.625

1R0 - 10M

1

200

100 - 200

5, 2.5, 0.55

2512

1

1R0 - 10M

1

250

100 -200

6.35, 3.2, 0.55

Datasheet - http://www.ttelectronicsresistors.com/datasheets/ASC.PDF

GCR Series

Glueable Chip Resistors

Type

Current

(amps)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0805

0.125

1R0 - 10M

1, 5

150

100 - 200

2, 1.3, 0.5

1206

0.25

1R0 - 10M

1, 5

200

100 - 200

3.2, 1.6, 0.5

2010

0.625

1R0 - 10M

1, 5

400

100 - 200

5, 2.5, 0.65

2512

1

1R0 - 10M

1, 5

500

100 -200

6.3, 3.2, 0.65

Datasheet - http://www.ttelectronicsresistors.com/datasheets/GCR.PDF

GPCF Series

General Purpose Precision Surface Mount Resistors

Type

Power

(watts)

Res. Range

(ohms)

Tolerance %

Max Volts

TCR

(ppm/°C)

Dim.(mm) l, w, h

0402

0.063

10R – 100K

0.1, 1

50

25, 50

1.0, 0.5, 0.45

0603

0.1

10R – 100K

0.1, 1

75

25, 50

1.6, 0.8, 0.55

0805

0.125

10R – 100K

0.1, 1

150

25, 50

2.1, 1.25, 0.65

1206

0.25

10R – 100K

0.1, 1

150

25, 50

3.1, 1.55, 0.7

Datasheet -  http://www.ttelectronicsresistors.com/datasheets/GPCF.pdf

Anti – Sulphur

BCN Series

Thick Film Chip Resistor Arrays

Type

Package Power

(watts)

Res. Range

(ohms)

Tolerance 

%

Max Volts

Array Description

Dim. (mm)

l, w, h

# Res. Circuit

Size

BCN10

0.25

10R – 1M0

5

25

4

Isolated

0804

2, 1, 0.36

BCN164A/AB(I)

0.25

10R – 1M0

1, 2, 5

50

4

Isolated

1206

3.2, 1.6, 0.5-0.6

BCN168RB/SB

0.25

100R – 1M0

5

25

8

Bussed

1206

3.2, 1.6, 0.5

BCN21

0.5

68R – 220K

5

25

8

Bussed

1608

4, 2.1, 0.55

BCN4D(BI)

0.5

10R – 1M0

1, 5

75

4

Isolated

2112

5.34, 3.1, 0.55

BCN318RB(I)/SB(I)

0.5

22R – 1M0

1, 2, 5

50

8

Bussed

2512

6.4, 3.1, 0.55-0.6

Datasheet - 

http://www.ttelectronicsresistors.com/datasheets

/bcn.pdf

Anti – Sulphur Option

AEC-Q200 (BCN164AB)

AEC-Q200 option

  

Application Notes

  for current sense, circuit protection, pulse and overload 

ratings, energy metering, lighting, medical, automotive, high voltage design and 

more

http://www.ttelectronicsresistors.com/literature.asp

Parametric Search

 for selection of products by parameters, package, technology 

and application

http://www.ttelectronicsresistors.com/search/

Calculation Tools

 for pulse loading, temperature derating, critical resistance, 

capacitor bleed and more

http://www.ttelectronicsresistors.com/products/resistors/calculation-tools.asp

Product Compliance 

for RoHS and REACH SVHC status, termination finish, 

obsolescence data, SnPb availability and more

See compliance and lifecycle tabs of relevant product information page.

Tin Whisker Report

 test report on tin whisker qualification of Pb-free finishes

http://www.ttelectronicsresistors.com/pdf/Tin%20Whisker%20Test%20Report.pdf

Resistors

17

 

Colour Code for Band-marked Resistors 

Further Technical Information

Example 1
5-Band Marking
E24/E96 values

4   7   0   x100   

1%  = 47K 1%

E.g. MFR4 E96

4   7   0   x100 

 = 47K

E.g. WRM0204 E96

8   2   x1K   5%  

= 82K 5%

E.g. WMO3S E24

Example 2
4-Band Marking
E24/E96 values 
without tolerance

Example 3
4-Band Marking
E24 values

Value 1

Value 2

Value 3

Multiplier

Tolerance

Silver

x 0.01

10%

K

Gold

x 0.1

5%

J

Black

0

0

0

x 1

Brown

1

1

1

x 10

1%

F

Red

2

2

2

x 100

2%

G

Orange

3

3

3

x 1K

Yellow

4

4

4

x 10K

Green

5

5

5

x 100K

0.5%

D

Blue

6

6

6

x 1M

0.25%

C

Violet

7

7

7

x 10M

0.1%

B

Grey

8

8

8

x 100M

0.05%

A

White

9

9

9

x 1G

Blank

20%

M

Ambient Temperature

The temperature which would be adopted by the body 

of the resistor under application conditions except with 

negligible power dissipation in the resistor. 

Critical Resistance

The resistance value at which application of the LEV 

causes dissipation of the full rated power.

Isolation Voltage (Voltage Proof)

The maximum continuous voltage which may be ap-

plied between the resistor and a conductor in contact 

with its insulated body.

LEV (Max Volts)

The maximum continuous voltage which may be ap-

plied across a resistor whose ohmic value is greater than 

the critical resistance.

Overload

Power dissipation which exceeds the power rating for 

durations exceeding 0.1s.

Power Rating

The maximum continuous power that may be dis-

sipated by a resistor whose ohmic value is less than the 

critical resistance and at a defined maximum ambient 

temperature.

Pulse (Surge)

Power dissipation which exceeds the power rating for 

durations less than 0.1s.

Series

A set of components with the same basic design 

features and performance and usually a range of sizes 

and ratings.

TCR

Temperature Coefficient of Resistance; the maximum 

magnitude of reversible ohmic value change per degree 

centigrade due to deviation in body temperature from a 

reference normally of 20°C.

Tolerance

The maximum allowable magnitude of deviation from 

nominal ohmic value measured at delivery and at room 

temperature.

Type

An individual member of a series with specified size and 

rating.

VCR

Voltage Coefficient of Resistance; the maximum revers-

ible reduction in ohmic value per volt due to an increase 

in applied voltage.

E192

E96

E24

E12

E6

1

3.16

1

1

1

1

1

97

1.01

3.2

1.02

1.1

1.2

1.5

2

98

1.02

3.24

1.05

1.2

1.5

2.2

3

99

1.04

3.28

1.07

1.3

1.8

3.3

4

100

1.05

3.32

1.1

1.5

2.2

4.7

5

101

1.06

3.36

1.13

1.6

2.7

6.8

6

102

1.07

3.4

1.15

1.8

3.3

10 etc…

7

103

1.09

3.44

1.18

2

3.9

8

104

1.1

3.48

1.21

2.2

4.7

9

105

1.11

3.52

1.24

2.4

5.6

10

106

1.13

3.57

1.27

2.7

6.8

11

107

1.14

3.61

1.3

3

8.2

12

108

1.15

3.65

1.33

3.3

10 etc…

13

109

1.17

3.7

1.37

3.6

14

110

1.18

3.74

1.4

3.9

15

111

1.2

3.79

1.43

4.3

16

112

1.21

3.83

1.47

4.7

17

113

1.23

3.88

1.5

5.1

18

114

1.24

3.92

1.54

5.6

19

115

1.26

3.97

1.58

6.2

20

116

1.27

4.02

1.62

6.8

21

117

1.29

4.07

1.65

7.5

22

118

1.3

4.12

1.69

8.2

23

119

1.32

4.17

1.74

9.1

24

120

1.33

4.22

1.78

10 etc…

25

121

1.35

4.27

1.82

26

122

1.37

4.32

1.87

27

123

1.38

4.37

1.91

28

124

1.4

4.42

1.96

29

125

1.42

4.48

2

30

126

1.43

4.53

2.05

31

127

1.45

4.59

2.1

32

128

1.47

4.64

2.15

33

129

1.49

4.7

2.21

34

130

1.5

4.75

2.26

35

131

1.52

4.81

2.32

36

132

1.54

4.87

2.37

37

133

1.56

4.93

2.43

38

134

1.58

4.99

2.49

39

135

1.6

5.05

2.55

40

136

1.62

5.11

2.61

41

137

1.64

5.17

2.67

42

138

1.65

5.23

2.74

43

139

1.67

5.3

2.8

44

140

1.69

5.36

2.87

45

141

1.72

5.42

2.94

46

142

1.74

5.49

3.01

47

143

1.76

5.56

3.09

48

144

1.78

5.62

3.16

49

145

1.8

5.69

3.24

50

146

1.82

5.76

3.32

51

147

1.84

5.83

3.4

52

148

1.87

5.9

3.48

53

149

1.89

5.97

3.57

54

150

1.91

6.04

3.65

55

151

1.93

6.12

3.74

56

152

1.96

6.19

3.83

57

153

1.98

6.26

3.92

58

154

2

6.34

4.02

59

155

2.03

6.42

4.12

60

156

2.05

6.49

4.22

61

157

2.08

6.57

4.32

62

158

2.1

6.65

4.42

63

159

2.13

6.73

4.53

64

160

2.15

6.81

4.64

65

161

2.18

6.9

4.75

66

162

2.21

6.98

4.87

67

163

2.23

7.06

4.99

68

164

2.26

7.15

5.11

69

165

2.29

7.23

5.23

70

166

2.32

7.32

5.36

71

167

2.34

7.41

5.49

72

168

2.37

7.5

5.62

73

169

2.4

7.59

5.76

74

170

2.43

7.68

5.9

75

171

2.46

7.77

6.04

76

172

2.49

7.87

6.19

77

173

2.52

7.96

6.34

78

174

2.55

8.06

6.49

79

175

2.58

8.16

6.65

80

176

2.61

8.25

6.81

81

177

2.64

8.35

6.98

82

178

2.67

8.45

7.15

83

179

2.71

8.56

7.32

84

180

2.74

8.66

7.5

85

181

2.77

8.76

7.68

86

182

2.8

8.87

7.87

87

183

2.84

8.98

8.06

88

184

2.87

9.09

8.25

89

185

2.91

9.2

8.45

90

186

2.94

9.31

8.66

91

187

2.98

9.42

8.87

92

188

3.01

9.53

9.09

93

189

3.05

9.65

9.31

94

190

3.09

9.76

9.53

95

191

3.12

9.88

9.76

96

192

10 etc… 10 etc…

Resistors

18

Common Formulae

Preferred Values 

Terms and Definitions

R

 is resistance value (ohms) 

P 

is power dissipated (watts)

V

 is voltage dropped (volts) 

I

 is current flowing (amps)

E.g. 

R = V / I

R

V

P

I

I

2

.R

V

2

/R

V

2

/P

P/I

2

V.I

I.R

P/I

V/I

P/V

√(P/ R)

√(P.R)

V/R

BI Technologies   IRC   Welwyn

General Note

  TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

www.ttelectronicsresistors.com

Sales Enquiries: http://www.ttelectronicsresistors.com/sales.php

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LIT-SF-FIXEDRESIST  - Issue 11