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| Document 635 15 W Forward Mode Transformers * * * * Designed for forward topology operating at 250 kHz Five different outputs from 3.3 V to 15 V; 36 - 75 V input 1500 Vrms isolation from primary and aux to the secondary FCT1-50M2SL was developed for use with National Semiconductor LM5015 and is referenced on application note AN-1724 as CA2983-CL and on AN-1725 as GA2983-CL. Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 6.9 - 7.1 g Ambient temperature -40C to +85C Storage temperature Component: -40C to +85C. Packaging: -40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 175 per 13 reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth PCB washing Only pure water or alcohol recommended Part Inductance2 number1 nom (H) FCT1-33M2SL_ 705 FCT1-50M2SL_ 705 FCT1-90M2SL_ 705 FCT1-120M2SL_ 705 FCT1-150M2SL_ 705 DCR max (mOhms)3 pri sec aux 55 6.0 320 55 13.5 320 55 33.5 320 55 46.5 320 55 72.5 320 Leakage inductance4 max (H) 0.510 0.425 0.340 0.340 0.310 Input voltage range (V) 36 - 75 36 - 75 36 - 75 36 - 75 36 - 75 Turns ratio5 pri : sec pri : aux Output6 1 : 0.24 1 : 0.67 3.3 V, 4.6 A 1 : 0.33 1 : 0.67 5.0 V, 3.0 A 1 : 0.57 1 : 0.67 9.0 V, 1.67 A 1 : 0.71 1 : 0.67 12 V, 1.25 A 1 : 0.90 1 : 0.67 15 V, 1.0 A 1. When ordering, please specify a packaging code: FCT1-50M2SLD Packaging: D = 13 machine ready reel. EIA-481 embossed plastic tape (175 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. 2. Inductance is measured at 250 kHz, 0.5 Vrms, 0 Adc. 3. DCR for the secondary is measured with the windings connected in parallel. 4. Leakage inductance is for the primary and is measured with the secondary shorted. 5. Turns ratio is with the secondary windings connected in parallel. 6. Output is with the secondary windings connected in parallel. Auxiliary winding output is 10 V, 20 mA. 7. Electrical specifications at 25C. Refer to Doc 362 "Soldering Surface Mount Components" before soldering. 1 Primary Secondary 2 4 Auxiliary 5 1 10 0.098 2,50 0.098 2,50 Dot above pin1 0.500 max 12,70 0.039 1,00 0.004 /0,10 0.699 max 17,75 0.512 13,00 5 6 10 9 0.061 1,55 1 0.590 14,99 0.050 1,27 0.028 0,70 7 6 Recommended Land Pattern 0.530 max 13,46 Secondary windings to be connected in parallel on PC board. inches Dimensions are in mm Specifications subject to change without notice. Please check our website for latest information. Document 635 Revised 02/18/09 (c) Coilcraft, Inc. 2009 |
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