B57238S0309M000

Inrush Current Limiters B57238 S 238 Applications I Switch-mode power supplies I Soft-start motors, e.g. in vacuum cleaners 16 max 7 max Features I I I I I Useable in series connections up to 265 Vrms Coated thermistor disk for line applications Kinked leads of tinned copper wire Wide resistance range UL approval (E69802) 7,5 ø1 Options Resistance tolerance < 20 % available on request Delivery mode Bulk (standard), cardboard tape, reeled or in Ammo pack TNT0365-4 Dimensions in mm Approx. weight 3 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 δth τc Cth 55/170/56 3,9 ± 20 % 25 ±3% approx. 20 approx. 80 approx. 1600 W °C mW/K s mJ/K R 25 Ω 2,5 3,0 4,7 5,0 7,0 8,0 10 15 16 22 25 Imax No. of (0 … 65 °C) R/T charA acteristic 8,4 7,4 6,6 6,4 6,0 5,5 5,0 4,4 4,0 4,0 3,4 1202 1203 1207 1207 1207 1208 1208 1209 1209 1210 1210 B25/100 K 2800 2900 2965 2965 2965 3065 3065 3165 3165 3265 3265 CT1) CT1) Parameters for 230 V 110 V R(I) 1) µF µF k n 700 700 700 700 700 700 700 700 700 700 700 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 2800 0,98 1,04 1,20 1,23 1,34 1,40 1,50 1,67 1,69 1,84 1,88 – 1,36 – 1,36 – 1,37 – 1,37 – 1,38 – 1,39 – 1,39 – 1,40 – 1,39 – 1,42 – 1,40 Ordering code B57238S0259M000 B57238S0309M000 B57238S0479M000 B57238S0509M000 B57238S0709M000 B57238S0809M000 B57238S0100M000 B57238S0150M000 B57238S0160M000 B57238S0220M000 B57238S0250M000 1) For details on the capacitance CT a s well as on the parameters k a nd n refer to “Application Notes”, pages 40 – 42. 138 05/02 32+3 23 max Inrush Current Limiters B57238 S 238 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 Cyclic endurance Transient load IEC 60068-2-3 IEC 60068-2-14