Inrush current limiters
ICLs
B57238
S238
Applications
Switch-mode power supplies
Soft-start motors, e.g. in vacuum cleaners
Features
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)
Options
Resistance tolerance <20% and alternative
lead configurations available on request
Delivery mode
Bulk (standard),
cardboard tape, reeled or in Ammo pack
General technical data
Climatic category
Max. power
Resistance tolerance
Rated temperature
Dissipation factor
Thermal cooling time constant
Heat capacity
(IEC 60068-1)
(at 25
°C)
Dimensional drawing
Dimensions in mm
Approx. weight 3 g
(in air)
(in air)
P
max
∆R
R
/R
R
T
R
δ
th
τ
c
C
th
55/170/21
3.9
±20
25
approx. 20
approx. 80
approx. 1600
W
%
°C
mW/K
s
mJ/K
Electrical specification and ordering codes
R
25
Ω
2.5
3
4.7
5
7
8
10
15
16
I
max
(0...65
°C)
A
8.4
7.4
6.6
6.4
6.0
5.5
5.0
4.4
4.0
B
25/100
K
2800
2900
2965
2965
2965
3065
3065
3165
3165
C
test1)
230 V
µF
700
700
700
700
700
700
700
700
700
C
test1)
110 V
µF
2800
2800
2800
2800
2800
2800
2800
2800
2800
Param.
for R(I)
1)
k
0.984
1.04
1.20
1.23
1.34
1.40
1.50
1.67
1.69
Param.
for R(I)
1)
n
1.36
1.36
1.37
1.37
1.38
1.39
1.39
1.40
1.39
Ordering code
B57238S0259M000
B57238S0309M000
B57238S0479M000
B57238S0509M000
B57238S0709M000
B57238S0809M000
B57238S0100M000
B57238S0150M000
B57238S0160M000
1) For details on the capacitance C
test
as well as on the parameters k and n refer to "Application notes", chapters 1.6 and 1.7.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 15
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