PTC thermistors for overcurrent
protection
Leaded disks, coated, 110 V
Series/Type:
B598*0
Date:
March 2006
EPCOS AG 2006. 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 yellow
UL approval to UL 1434 with V
max
= 125 V
and V
R
= 110 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
Dimensional drawing
Dimensions (mm)
Type
b
max
h
max
d
C830
22.0
25.5
0.6
C840
17.5
21.0
0.6
C850
13.5
17.0
0.6
C860
11.0
14.5
0.6
C870
9.0
12.5
0.6
C880
6.5
10.0
0.6
C890
4.0
7.5
0.5
General technical data
Max. operating voltage
(T
A
= 60
C)
V
max
160
VDC or VAC
Rated voltage
V
R
110
VDC or VAC
Switching cycles
N
100
Reference temperature
(typ.)
T
ref
160
C
Tolerance of R
R
R
R
25
%
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, 110 V
C830 ... C890
Page 2 of 9
Please read Important notes and
Cautions and warnings 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
R
R
R
min
Ordering code
C830
525
1050
7.0
24
3.7
2.2
B59830C0160A070
C840
400
800
4.1
18
6
3.6
B59840C0160A070
C850
250
500
2.2
16
10
6.0
B59850C0160A070
C860
180
360
1.5
13
15
7.8
B59860C0160A070
C870
125
250
1.0
11
25
13.1
B59870C0160A070
C880
70
140
0.4
8
70
36.7
B59880C0160A070
C890
35
70
0.2
6
150
78.7
B59890C0160A070
Overcurrent protection
Leaded disks, coated, 110 V
C830 ... C890
Page 3 of 9
Please read Important notes and
Cautions and warnings 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, 110 V
C830 ... C890
Page 4 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
Characteristics (typical)
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, 110 V
C830 ... C890
Page 5 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
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