PTC thermistors for
overcurrent protection
Leaded disks, coated, 230 V, lead-free series
Series/Type:
Date:
B598**
February 2012
© EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Overcurrent protection
Leaded disks, coated, 230 V, lead-free series
Applications
Overcurrent protection
Short circuit protection
Features
No intentional use of lead compounds
Lead concentration in the homogenous
materials lower than 0.1%
Tight resistance tolerance
Marking: Type, manufacturer's logo,
reference temperature in
°C
and date code
YYWW
UL approval to UL 1434 (file number
E69802)
VDE approval for selected types
(licence number 104843 E)
Delivery mode
Cardboard strips (standard)
Dimensional drawing
C850 ... C883
Dimensions (mm)
Type
C850
C860
C873
C875
C880
C883
w
max
13.5
11.0
9.0
9.0
6.5
6.5
V
max
V
R
N
∆R
R
T
ref
T
op
T
op
h
max
17.0
14.5
12.5
12.5
10.0
10.0
265
230
100
±20
120
40/+125
0/+60
∅d
0.6
0.6
0.6
0.6
0.6
0.6
V DC or V AC
V DC or V AC
%
°C
°C
°C
General technical data
Max. operating voltage
Rated voltage
Switching cycles
Tolerance of R
R
Reference temperature
Operating temperature range
Operating temperature range
(T
A
= 60
°C)
(T
ref
= 120
°C)
(typ.)
(V = 0)
(V = V
max
)
Electrical specifications and ordering codes
Type I
R
I
S
I
Smax
I
r
T
ref
R
R
(V = V
max
) (typ.)
(typ.)
(V = V
max
)
A
mA
°C
Ω
2.2
1.5
1.0
1.0
0.4
0.4
13
10
9
9
6
5
120
120
120
120
120
120
10
15
45
65
70
120
R
min
Approvals
Ordering code
mA
C850 220
C860 170
C873 90
C875 80
C880 65
C883 50
mA
330
260
140
120
98
75
Ω
6
9
27
39
42
72
X
X
X
X
X
X
B59850C0120A570
B59860C0120A570
B59873C0120A570
B59875C0120A570
B59880C0120A570
B59883C0120A570
X
X
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 10
Overcurrent protection
Leaded disks, coated, 230 V, lead-free series
Reliability data
Test
Electrical endurance,
cycling
Electrical endurance,
constant
Damp heat
Standard
IEC 60738-1
IEC 60738-1
IEC 60738-1
Test conditions
Room temperature, I
Smax
; V
max
Number of cycles: 100
Storage at V
max
/T
op,max
(V
max
)
Test duration: 1000 h
Temperature of air: 40
°C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
T
1
= T
op,min
(0 V), T
2
= T
op,max
(0 V)
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, test Na
Frequency range: 10 to 55 Hz
Displacement amplitude: 0.75 mm
Test duration: 3
×
2 h
Test according to IEC 60068-2-6, test Fc
Acceleration: 390 m/s
2
Pulse duration: 6 ms; 6
×
4000 pulses
Dry heat: T = T
op,max
(0 V)
Test duration: 16 h
Damp heat first cycle
Cold: T = T
op,min
(0 V)
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
∆R
25
/R
25
< 25%
< 25%
< 10%
C850 ... C883
Rapid change
of temperature
IEC 60738-1
< 10%
Vibration
IEC 60738-1
< 5%
Shock
Climatic sequence
IEC 60738-1
IEC 60738-1
< 5%
< 10%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 10
Overcurrent protection
Leaded disks, coated, 230 V, lead-free series
Characteristics (typical)
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
C850 ... C883
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)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 10
Overcurrent protection
Leaded disks, coated, 230 V, lead-free series
Characteristics (typical)
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
C850 ... C883
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)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 10
