B57464

Inrush Current Limiters B57464 S 464 Applications I Switch-mode power supplies I Soft-start motors, e.g. in vacuum cleaners 26 max. 7 max. Features I I I I 7,5 Options Alternative resistance ratings and resistance tolerances < 20 % available on request Delivery mode Bulk TNT0128-3 Dimensions in mm Approx. weight 9 g www.DataSheet4U.com 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 δth τc Cth 55/170/56 6,7 ± 20 % 25 ±3% approx. 30 approx. 130 approx. 3900 W °C mW/K s mJ/K R 25 Ω 1,0 Imax No. of (0 … 65 °C) R/T charA acteristic 20 1202 B25/100 K 2800 CT1) Parameters for 230 V R(I) 1) µF k n 2500 0,886 – 1,30 Ordering code B57464S0109M000 1) For details on the capacitance CT as well as on the parameters k and n refer to “Application Notes”, pages 40 – 42. 144 05/02 32+3 Useable in series connections up to 265 Vrms Coated thermistor disk Kinked leads of tinned copper wire High energy absorption capability ø1 31 max. Inrush Current Limiters B57464 S 464 Reliability data Test Storage in dry heat Standard IEC 60068-2-2 Test conditions Storage at upper category temperature T: 170 °C t: 1000 h Temperature of air: 40 °C Relative humidity of air: 93 % Duration: 21 days ∆R 25/R25 (typical) < 10 % Remarks No visible damage Storage in damp heat, steady state Rapid temperature cycling Endurance ...