Inrush Current Limiters
B57238
S 238
Applications
I
Switch-mode power supplies
I
Soft-start motors, e.g. in vacuum cleaners
16 max
7 max
Features
I
I
I
I
I
Useable in series connections up to 265 V
rms
Coated thermistor disk for line applications
Kinked leads of tinned copper wire
Wide resistance range
UL approval (E69802)
7,5
ø1
Options
Resistance tolerance < 20 % available on request
Delivery mode
Bulk (standard), cardboard tape, reeled or in Ammo pack
TNT0365-4
Dimensions in mm
Approx. weight 3 g
Climatic category (IEC 60068-1)
Max. power at 25
°
C
Resistance tolerance
Rated temperature
B
value tolerance
Dissipation factor (in air)
Thermal cooling time constant (in air)
Heat capacity
P
max
∆
R
N
/R
N
T
N
∆
B/B
δ
th
τ
c
C
th
55/170/56
3,9
±
20 %
25
±
3%
approx. 20
approx. 80
approx. 1600
W
°
C
mW/K
s
mJ/K
R
25
Ω
2,5
3,0
4,7
5,0
7,0
8,0
10
15
16
22
25
I
max
No. of
(0 … 65
°
C)
R/T
char-
A
acteristic
8,4
7,4
6,6
6,4
6,0
5,5
5,0
4,4
4,0
4,0
3,4
1202
1203
1207
1207
1207
1208
1208
1209
1209
1210
1210
B
25/100
K
2800
2900
2965
2965
2965
3065
3065
3165
3165
3265
3265
C
T1)
C
T1)
Parameters for
230 V 110 V
R(I)
1)
µ
F
µ
F
k
n
700
700
700
700
700
700
700
700
700
700
700
2800
2800
2800
2800
2800
2800
2800
2800
2800
2800
2800
0,98
1,04
1,20
1,23
1,34
1,40
1,50
1,67
1,69
1,84
1,88
– 1,36
– 1,36
– 1,37
– 1,37
– 1,38
– 1,39
– 1,39
– 1,40
– 1,39
– 1,42
– 1,40
Ordering code
B57238S0259M000
B57238S0309M000
B57238S0479M000
B57238S0509M000
B57238S0709M000
B57238S0809M000
B57238S0100M000
B57238S0150M000
B57238S0160M000
B57238S0220M000
B57238S0250M000
1) For details on the capacitance
C
T
as well as on the parameters
k
and
n
refer to “Application Notes”, pages 40 – 42.
138
05/02
32+3
23 max
EPCOS [ EPCOS ]
