B57237

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 www.DataSheet4U.com 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 δth τc Cth 55/170/56 3,1 ± 20 % 25 ±3% approx. 17 approx. 90 approx. 1530 W °C mW/K s mJ/K R 25 Ω 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) µF µF 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 capacit...