PTC thermistors for
overcurrent protection
Leaded disks, coated, 63 V
Series/Type:
Date:
B599*0
June 2011
© EPCOS AG 2011. 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, 63 V
C910 ... C990
Applications
Overcurrent protection
Short circuit protection
Features
Lead-free terminals
Wide range of rated currents:
30 mA up to 1 A
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
UL approval for T
ref
= 120
°C
and 130
°C
to
UL 1434 with V
max
= 65 V and V
R
= 63 V
(file number E69802)
UL approval for T
ref
= 80
°C
to UL 1434 with
V
max
= 63 V and V
R
= 50 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 w
≤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
C910
C930
C930
C930
C940
C940
C950
C950
C950
C960
C960
C960
C970
C970
C970
C980
C980
C980
C990
C990
T
ref
°C
130
80
120
130
80
120
80
120
130
80
120
130
80
120
130
80
120
130
80
120
w
max
22.0
22.0
22.0
17.5
17.5
17.5
13.5
13.5
11.0
11.0
11.0
9.0
9.0
9.0
6.5
6.5
6.5
4.0
4.0
4.0
h
max
25.5
25.5
25.5
21.0
21.0
21.0
17.0
17.0
14.5
14.5
14.5
12.5
12.5
12.5
10.0
10.0
10.0
7.5
7.5
7.5
∅d
0.8
0.6
0.6
0.8
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.5
0.5
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 15
Overcurrent protection
Leaded disks, coated, 63 V
C910 ... C990
General technical data
Max. operating voltage
Rated voltage
Switching cycles
Tolerance of R
R
Tolerance of R
R
Operating temperature range
Operating temperature range
Operating temperature range
(T
A
= 60
°C)
V
max
V
R
N
(T
ref
= 80
°C
or 120
°C)
∆R
R
(T
ref
= 130
°C)
∆R
R
(V = 0)
T
op
(V = V
max
, T
ref
= 80
°C)
T
op
(V = V
max
, T
ref
= 120
°C/130 °C)
T
op
80
63
100
±25
±20
40/+125
40/+85
40/+125
V DC or V AC
V DC or V AC
%
%
°C
°C
°C
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
10.0
10.0
8.0
8.0
10.0
5.5
4.3
4.3
3.0
8.0
5.5
3.0
1.0
4.3
3.0
1.0
0.7
1.0
0.7
0.7
60
50
50
40
35
30
25
25
20
25
20
20
18
15
11
16
15
8
12
5
130
120
130
120
80
120
130
120
130
80
80
120
130
80
80
120
130
80
120
80
1.2
1.65
2.2
2.3
1.65
3.7
4.9
5.6
8.0
2.3
3.7
9.4
20
5.6
9.4
25
62
25
55
55
R
min
Approvals
Ordering code
mA
mA
Ω
0.8
1.1
1.5
1.5
1.1
2.4
3.2
3.7
5.2
1.5
2.4
6.2
13.2
3.7
6.2
16.5
40.9
16.5
36.3
36.3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
B59910C0130A070
B59930C0120A070
B59930C0130A070
B59940C0120A070
B59930C0080A070
B59950C0120A070
B59950C0130A070
B59960C0120A070
B59960C0130A070
B59940C0080A070
B59950C0080A070
B59970C0120A070
B59970C0130A070
B59960C0080A070
B59970C0080A070
B59980C0120A070
B59980C0130A070
B59980C0080A070
B59990C0120A070
B59990C0080A070
C910 1000 1500
C930 700 1400
C930 700 1100
C940 450 900
C930 340 700
C950 320 640
C950 320 500
C960 250 500
C960 250 380
C940 245 500
C950 170 350
C970 150 300
C970 150 240
C960 130 265
C970
90 190
C980
85 170
C980
85 130
C980
50 110
C990
50 100
C990
30
60
X
X
X
X
X
X
X
X
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 15
Overcurrent protection
Leaded disks, coated, 63 V
C910 ... C990
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%
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 4 of 15
Overcurrent protection
Leaded disks, coated, 63 V
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)
C910 ... C990
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 15
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