B57238 データシートの表示（PDF） - EPCOS AG
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B57238 Datasheet PDF : 14 Pages
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Inrush current limiters
ICLs
B57238S0***M0**
S238
Applications
Switch-mode power supplies
Soft-start motors, e.g. in vacuum cleaners
Dimensional drawing
Features
Useable in series connections
up to 265 VRMS
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
Dimensions in mm
Approx. weight 3 g
Delivery mode
Bulk (standard) or with cardboard tape on 500-mm reel
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)
(in air)
(in air)
Pmax
∆RR/RR
TR
δth
τc
Cth
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
R25
Ω
2.5
3
4.7
5
7
8
10
15
16
Imax
(0...65 °C)
A
8.4
7.4
6.6
6.4
6.0
5.5
5.0
4.4
4.0
B25/100
K
2800
2900
2965
2965
2965
3065
3065
3165
3165
C 1)
test
230 V AC
µF
700
700
700
700
700
700
700
700
700
C 1)
test
110 V AC
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
B57238S0259M0**
B57238S0309M0**
B57238S0479M0**
B57238S0509M0**
B57238S0709M0**
B57238S0809M0**
B57238S0100M0**
B57238S0150M0**
B57238S0160M0**
** = Delivery mode
00 = Bulk
51 = Reel packing
1) For details on the capacitance Ctest 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 14
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