ICLB57237S237 Datasheet, PDF (2/14 Pages) EPCOS – NTC thermistors for inrush current limiting

Inrush current limiters
ICLs
B57237S0***M0**
S237
Applications
Switch-mode power supplies
Soft-start motors, e.g. in vacuum cleaners
Dimensional drawing
Features
Useable in series connections
up to 265 V_RMS
Coated thermistor disk
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 2 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)
P_max
∆R_R/R_R
T_R
δ_th
τ_c
C_th
55/170/21
3.1
±20
25
approx. 17
approx. 90
approx. 1530
W
%
°C
mW/K
s
mJ/K
Electrical specification and ordering codes
R₂₅
Ω
1
2.2
2.5
4.7
5
7
10
15
22
I_max
(0...25 °C)
A
9.0
7.0
6.5
5.1
5.0
4.2
3.7
3.0
2.8
B_25/100
K
2700
2800
2800
2900
2900
3000
3060
3000
3300
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
0.622
0.806
0.843
1.03
1.05
1.16
1.29
1.49
1.57
Param.
for R(I)¹⁾
n
1.27
1.30
1.30
1.32
1.32
1.33
1.34
1.33
1.37
Ordering code
B57237S0109M0**
B57237S0229M0**
B57237S0259M0**
B57237S0479M0**
B57237S0509M0**
B57237S0709M0**
B57237S0100M0**
B57237S0150M0**
B57237S0220M0**
** = 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.
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