Document 635 15 W Forward Mode Transformers • Designed for two-switch forward topology operating at 250 kHz • Five different outputs from 3.3 V to 15 V; 36 – 75 V input • 1500 Vrms, one minute isolation from primary and aux to the secondary 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 –40°C to +85°C Storage temperature Component: –40°C to +85°C. Tape and reel packaging: –40°C to +80°C Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 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 Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. LeakageInput 3 5 Part Inductance2 DCR max (mOhms) inductance4 voltage Turns ratio number1 nom (µH) pri sec aux max (µH) range (V) pri : sec pri : aux Output6 FCT1-33M2SL_ 705 55 6.0 320 0.510 36 – 75 1 : 0.24 1 : 0.67 3.3 V, 4.6 A FCT1-50M2SL_ 705 55 13.5 320 0.425 36 – 75 1 : 0.33 1 : 0.67 5.0 V, 3.0 A FCT1-90M2SL_ 705 55 33.5 320 0.340 36 – 75 1 : 0.57 1 : 0.67 9.0 V, 1.67 A FCT1-120M2SL_ 705 55 46.5 320 0.340 36 – 75 1 : 0.71 1 : 0.67 12 V, 1.25 A FCT1-150M2SL_ 705 55 72.5 320 0.310 36 – 75 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 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 10 9 1 Primary 2 0.061 1,55 1 0.590 14,99 0.050 1,27 Secondary 4 7 6 Recommended Land Pattern 0.500 max 12,70 0.004 /0,10 0.039 1,00 0.699 max 17,75 0.512 13,00 5 1 5 inches Dimensions are in mm 6 0.028 0,70 0.530 max 13,46 Auxiliary Secondary windings to be connected in parallel on PC board. Dot above pin1 0.098 2,50 10 0.098 2,50 Document 635 Revised 02/18/09