Inrush current limiters
ICLs
B57235
S235
Applications
Switch-mode power supplies
Features
Useable in series connections
up to 265 V
RMS
Coated thermistor disk
Kinked leads of tinned copper wire
Wide resistance range
Small space requirement
Cost-effective
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 0.8 g
(in air)
(in air)
P
max
∆R
R
/R
R
T
R
δ
th
τ
c
C
th
55/170/21
1.8
±20
25
approx. 9
approx. 60
approx. 540
W
%
°C
mW/K
s
mJ/K
Electrical specification and ordering codes
R
25
Ω
4.7
5
6
8
10
I
max
(0...65
°C)
A
4.4
4.2
4.0
3.5
3.0
B
25/100
K
2800
2800
2800
2900
2900
C
test1)
230 V
µF
200
200
200
200
200
C
test1)
110 V
µF
800
800
800
800
800
Param.
for R(I)
1)
k
0.700
0.710
0.757
0.814
0.879
Param.
for R(I)
1)
n
1.30
1.30
1.30
1.32
1.32
Ordering code
B57235S0479M000
B57235S0509M000
B57235S0609M000
B57235S0809M000
B57235S0100M000
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
EPCOS [ EPCOS ]
