PTC thermistors for overcurrent
protection
Leaded disks, coated, 230 V
Series/Type:
B598**
Date:
December 2007
© EPCOS AG 2007. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
Overcurrent and short-circuit protection
Features
Lead-free terminals
Manufacturer's logo and type designation stamped on in black or red for T
ref
= 80
°
C
and for T
ref
= 120
°
C and 130
°
C stamped on in white
Short response times
UL approval for T
ref
= 130
°
C to UL 1434 with V
max
= 220 V and V
R
= 220 V
(file number E69802)
UL approval for T
ref
= 120
°
C to UL 1434 with V
max
= 230 V and V
R
= 220 V
(file number E69802)
UL approval for T
ref
= 80
°
C to UL 1434 with V
max
= 165 V and V
R
= 145 V
(file number E69802)
VDE approval (license number 104843 E)
RoHS-compatible
Options
Leadless disks and leaded disks without coating available on request
Thermistors with diameter b
≤
11.0 mm are also available on tape (to IEC 60286-2)
Delivery mode
Cardboard strips (standard)
Cardboard tape reeled or in Ammo pack on request
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 2 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawing
Dimensions (mm)
Type
T
ref
°
C
b
max
h
max
∅
d
C810
130
22.0
25.5
0.8
C830
80
22.0
25.5
0.6
C830
120
22.0
25.5
0.6
C830
130
17.5
21.0
0.8
C840
80
17.5
21.0
0.6
C840
120
17.5
21.0
0.6
C840
130
13.5
17.0
0.6
C850
80
13.5
17.0
0.6
C850
120
13.5
17.0
0.6
C850
130
11.0
14.5
0.6
C860
80
11.0
14.5
0.6
C860
120
11.0
14.5
0.6
C860
130
9.0
12.5
0.6
Type
T
ref
°
C
b
max
h
max
∅
d
C870
80
9.0
12.5
0.6
C870
120
9.0
12.5
0.6
C870
130
6.5
10.0
0.6
C872
120
9.0
12.5
0.6
C873
120
9.0
12.5
0.6
C874
120
9.0
12.5
0.6
C875
120
9.0
12.5
0.6
C880
80
6.5
10.0
0.6
C880
120
6.5
10.0
0.6
C880
130
4.0
7.5
0.6
C883
120
6.5
10.0
0.6
C890
80
4.0
7.5
0.5
C890
120
4.0
7.5
0.5
General technical data
Max. operating voltage
(T
A
= 60
°
C)
V
max
265
VDC or VAC
Rated voltage
V
R
230
VDC or VAC
Switching cycles
N
100
Tolerance of R
R
(T
ref
= 80
°
C or 120
°
C)
∆
R
R
±
25
%
Tolerance of R
R
(T
ref
= 130
°
C)
∆
R
R
±
20
%
Operating temperature range
(V = 0)
T
op
40/+125
°
C
Operating temperature range
(V = V
max
)
T
op
0/+60
°
C
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 3 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Electrical specifications and ordering codes
Type
I
R
mA
I
S
mA
I
Smax
(V = V
max
)
A
I
r
(V = V
max
)
typ.
mA
T
ref
°
C
R
R
Ω
R
min
Ω
Ordering code
C810
650
980
7.0
20
130
3.5
2.3
B59810C0130A070
C830
460
920
7.0
20
120
3.7
2.4
B59830C0120A070
C830
450
680
4.1
15
130
5
3.3
B59830C0130A070
C840
330
500
2.2
13
130
9
5.9
B59840C0130A070
C840
330
660
4.1
15
120
6
3.8
B59840C0120A070
C830
250
510
7.0
15
80
3.7
2.2
B59830C0080A070
C850
200
320
1.5
10
130
13
8.6
B59850C0130A070
C850
200
400
2.2
13
120
10
6.4
B59850C0120A070
C840
170
350
4.1
10
80
6
3.6
B59840C0080A070
C860
140
230
1.0
9
130
25
16.5
B59860C0130A070
C860
140
280
1.5
10
120
15
9
B59860C0120A070
C850
110
230
2.2
8
80
10
6
B59850C0080A070
C870
100
150
0.4
6
130
50
33
B59870C0130A070
C870
100
200
1.0
9
120
25
15
B59870C0120A070
C860
90
180
1.5
6
80
15
7.8
B59860C0080A070
C872
80
160
1.0
9
120
35
21
B59872C0120A070
C873
70
140
1.0
9
120
45
27
B59873C0120A070
C870
60
130
1.0
5
80
25
13
B59870C0080A070
C874
60
125
1.0
9
120
55
31
B59874C0120A070
C875
55
110
1.0
9
120
65
36
B59875C0120A070
C880
55
90
0.2
5
130
160
106
B59880C0130A070
C880
55
110
0.4
6
120
70
39
B59880C0120A070
C883
35
70
0.4
5
120
120
67
B59883C0120A070
C880
30
70
0.4
4
80
70
36.7
B59880C0080A070
C890
30
60
0.2
5
120
150
84
B59890C0120A070
C890
15
40
0.2
3
80
150
78.7
B59890C0080A070
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 4 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Reliability data
Test
Standard
Test conditions
∆
R
25
/R
25
Electrical endurance,
cycling
IEC 60738-1
Room temperature, I
Smax;
V
max
Number of cycles: 100
< 25%
Electrical endurance,
constant
IEC 60738-1
Storage at V
max
/T
op
Test duration : 1000 h
< 25%
Damp heat
IEC 60738-1
Temperature of air: 40
°
C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
< 10%
Rapid change
of temperature
IEC 60738-1
T = T
LCT
, T = T
UCT
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, Test Na
< 10%
Vibration
IEC 60738-1
Frequency range: 10 to 55 Hz
Displacement amplitude: 0.75 mm
Test duration: 3 · 2 h
Test according to IEC 60028-2-6, Test Fc
< 5%
Bump
IEC 60738-1
Pulse shape: half-sine
Acceleration: 50 g
Pulse duration: 1 ms; 6 · 3 pulses
Test according to IEC 60068-2-29
< 5%
Climatic sequence
IEC 60738-1
Dry heat: T = T
UCT
Test duration: 16 h
Damp heat first cycle
Cold: T = T
LCT
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
< 10%
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 5 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 80
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 6 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 80
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 7 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 120
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 8 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 120
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 9 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 120
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 10 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 130
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 11 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for T
ref
= 130
°
C
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
PTC current I
PTC
versus PTC voltage V
PTC
(measured at 25
°
C in still air)
Switching time t
S
versus switching current I
S
(measured at 25
°
C in still air)
Rated current I
R
versus ambient temperature T
A
(measured in still air)
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 12 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
General
EPCOS thermistors are designed for specific applications and should not be used for purposes
not identified in our specifications, application notes and data books unless otherwise agreed
with EPCOS during the design-in-phase.
Ensure suitability of thermistor through reliability testing during the design-in phase. The ther-
mistors should be evaluated taking into consideration worst-case conditions.
Storage
Store thermistors only in original packaging. Do not open the package before storage.
Storage conditions in original packaging: storage temperature
25
°
C ... +45
°
C, relative hu-
midity
≤
75% annual mean, maximum 95%, dew precipitation is inadmissible.
Avoid contamination of thermistors surface during storage, handling and processing.
Avoid storage of thermistor in harmful environment with effect on function on long-term opera-
tion (examples given under operation precautions).
Use thermistor within 6 months after delivery.
Handling
PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs.
Components must not be touched with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
Soldering (where applicable)
Use rosin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Standard PTC heaters are not suitable for soldering.
Mounting
Electrode must not be scratched before/during/after the mounting process.
Contacts and housing used for assembly with thermistor have to be clean before mounting. Es-
pecially grease or oil must be removed.
When PTC thermistors are encapsulated with sealing material, the precautions given in chapter
"Mounting instructions", "Sealing and potting" must be observed.
When the thermistor is mounted, there must not be any foreign body between the electrode of
the thermistor and the clamping contact.
The minimum force of the clamping contacts pressing against the PTC must be 10 N.
During operation, the thermistor’s surface temperature can be very high. Ensure that adjacent
components are placed at a sufficient distance from the thermistor to allow for proper cooling at
the thermistors.
Ensure that adjacent materials are designed for operation at temperatures comparable to the
surface temperature of thermistor. Be sure that surrounding parts and materials can withstand
this temperature.
Avoid contamination of thermistor surface during processing.
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 13 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
Operation
Use thermistors only within the specified temperature operating range.
Use thermistors only within the specified voltage and current ranges.
Environmental conditions must not harm the thermistors. Use thermistors only in normal at-
mospheric conditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, am-
monia gas, sulfuric acid gas etc), corrosive agents, humid or salty conditions.Contact with any
liquids and solvents should be prevented.
Be sure to provide an appropriate fail-safe function to prevent secondary product damage
caused by abnormal function (e.g. use VDR for limitation of overvoltage condition).
Overcurrent protection
Leaded disks, coated, 230 V
C810 ... C890
Page 14 of 15
Please read Cautions and warnings and
Important notes at the end of this document.
The following applies to all products named in this publication:
1.
Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical re-
quirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately incum-
bent on the customer to check and decide whether an EPCOS product with the properties de-
scribed in the product specification is suitable for use in a particular customer application.
2.
We also point out that in individual cases, a malfunction of passive electronic compo-
nents or failure before the end of their usual service life cannot be completely ruled out
in the current state of the art, even if they are operated as specified. In customer applica-
tions requiring a very high level of operational safety and especially in customer applications
in which the malfunction or failure of a passive electronic component could endanger human
life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured
by means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by
third parties in the event of malfunction or failure of a passive electronic component.
3.
The warnings, cautions and product-specific notes must be observed.
4.
In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Ma-
terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-
tailed questions, please contact our sales offices.
5.
We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order. We also
reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the fore-
going for customer-specific products.
6.
Unless otherwise agreed in individual contracts, all orders are subject to the current ver-
sion of the “General Terms of Delivery for Products and Services in the Electrical In-
dustry” published by the German Electrical and Electronics Industry Association
(ZVEI).
7.
The
trade
names
EPCOS,
BAOKE,
Alu-X,
CeraDiode,
CSSP,
MiniBlue,
MKK,
MLSC, MotorCap, PCC, PhaseCap, PhaseMod, SIFERRIT, SIFI, SIKOREL, SilverCap,
SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trademarks
registered or pending in Europe and in other countries. Further information will be found on
the Internet at www.epcos.com/trademarks.
Important notes
Page 15 of 15