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EPCOS |
Overcurrent Protection
Leaded Disks, Coated, 42 V Power Net
B599*3
C 943 … C 983
Applications
I Overcurrent protection for 42 V power net
b
Features
I Lead-free terminals
I Manufacturer’s logo and type designation
stamped on in white
Options
I Leadless disks and leaded disks without
coating available on request
I Thermistors with diameter b ≤ 11,0 mm
are also available on tape (to IEC 60286-2)
Delivery mode
I Cardboard strips (standard)
I Cardboard tape reeled or in AMMO pack on request
5
Dimensions (mm)
Type
C 943
C 953
C 963
C 973
C 983
bmax
17,5
13,5
11,0
9,0
6,5
∅d
0,6
0,6
0,6
0,6
0,6
3,5 max.
ød
TPT0647-V
hmax
21,0
17,0
14,5
12,5
10,0
General technical data
Max. operating voltage (TA = 125 °C)
Max. operating voltage (t ≤ 400 ms)
Rated voltage
Switching cycles (typ.)
Reference temperature (typ.)
Resistance tolerance
Operating temperature range (V = 0)
(V = Vmax)
Vmax1)
Vmax,dyn2)
VN
N
TRef
∆RN
Top
Top
54
58
42
100
120
± 20 %
– 40/+ 125
– 40/+ 125
VDC
V
VDC
°C
°C
°C
Electrical specifications and ordering codes
Type
C 943
C 953
C 963
C 973
C 983
IN
IS
ISmax
Ir (typ.) RN
(V=Vmax) (V=Vmax)
mA mA A
mA Ω
750 1300 8,0
50
1,0
430 770 6,0
40
1,8
320 560 5,0
30
2,7
230 410 4,0
20
4,2
140 240 2,0
15
10,0
Rmin
Ω
0,7
1,2
1,8
2,9
6,8
Ordering code
B59943C0120A070
B59953C0120A070
B59963C0120A070
B59973C0120A070
B59983C0120A070
1) To ISO/TC22 WD24V-1E
2) Peak value of maximum DC operating voltage, incl. ripple
59 10/02
Overcurrent Protection
Leaded Disks, Coated, 42 V Power Net
B599*3
C 943 … C 983
Characteristics (typical)
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
10 6
Ω
R PTC
10 4
10 3
B59943C0120A070
B59953C0120A070
B59963C0120A070
B59973C0120A070
B59983C0120A070
TPT0781-G
PTC current IPTC versus PTC voltage VPTC
(measured at 25 °C in still air)
10 4
mA
I PTC
10 3
B59943C0120A070
B59953C0120A070
B59963C0120A070
B59973C0120A070
B59983C0120A070
TPT0782-P
10 2
10 2
10 1
10 0
10
_1
_50
0
50 100 150 200 ˚C 250
TPTC
Switching time tS versus switching current IS
(measured at 25 °C in still air)
10 1
0,1 1 10 V 100
V PTC
Rated current IN versus ambient temperature TA
(measured in still air)
10 3
tS s
10 2
10 1
TPT0783-X
B59943C0120A070
B59953C0120A070
B59963C0120A070
B59973C0120A070
B59983C0120A070
2,0
ΙN,TA
ΙN, 25 ˚C
1,6
1,4
1,2
1,0
TPT0784-6
0,8
0,6
10 0
0,4
10 _1
0 2,5 5 7,5 10 A 12,5
IS
0,2
0_20 0
20 40 60 80 100
˚C 140
TA
60 10/02
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