01360137| Datasheet

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Inrush Current Limiters

B57237 S 237

Applications
I Switch-mode power supplies I Soft-start motors, e.g. in vacuum cleaners

Features
I I I I I

Useable in series connections up to 265 Vrms Coated thermistor disk Kinked leads of tinned copper wire Wide resistance range UL approval (E69802)

Options Resistance tolerance < 20 % available on request Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack Dimensions in mm Approx. weight 2 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

Pmax R N/R N TN B/B th c Cth

55/170/56 3,1 20 % 25 3% approx. 17 approx. 90 approx. 1530

C
mW/K s mJ/K

R 25

1,0 2,2 2,5 4,7 5,0 7,0 10 15 22 33

Imax (25 C) A 9,0 7,0 6,5 5,1 5,0 4,2 3,7 3,0 2,8 2,5

No. of R/T characteristic 1201 1202 1202 1203 1203 1302 1308 1302 1304 1304

B25/100 K 2700 2800 2800 2900 2900 3060 3060 3000 3300 3300

CT1) C T1) Parameters for 230 V 110 V R(I) 1) uF uF k n 700 700 700 700 700 700 700 700 700 900 2800 2800 2800 2800 2800 2800 2800 2800 2800 3600 0,622 0,806 0,843 1,03 1,05 1,16 1,29 1,49 1,57 1,78 1,27 1,30 1,30 1,32 1,32 1,33 1,34 1,33 1,37 1,37

Ordering code

B57237S0109M000 B57237S0229M000 B57237S0259M000 B57237S0479M000 B57237S0509M000 B57237S0709M000 B57237S0100M000 B57237S0150M000 B57237S0220M000 B57237S0330M000

1) For details on the capacitance CT as well as on the parameters k and n refer to "Application Notes", pages 40 42.

136 05/02