Document 714 8 W Forward-Mode Transformers • Designed for forward topology operating at 250 kHz • Five outputs from 3.3 V to 15 V; 18 – 36 V input • 1500 Vrms isolation from primary and aux to the secondary • pecified by Texas Instruments for its LM5015 Two-Switch Forward Regulator Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 4.0 – 4.3 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 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. 3 LeakageInput Turns ratio5 Part Inductance2 DCR max (mOhms) inductance4 voltage number1 nom (µH) pri sec aux max (µH) range (V) pri : sec pri : aux Output6 FCT1-33L2SL_ 324 65 22.5460 0.530 18 – 361 : 0.5 1 : 1.39 3.3 V, 2.4 A 1 : 1.39 5 V, 1.6 A FCT1-50L2SL_ 324 6531490 0.585 18 – 361 : 0.72 1 : 1.39 9 V, 0.89 A FCT1-90L2SL_ 324 65105 490 0.570 18 – 361 : 1.17 1 : 1.39 12 V, 0.67 A FCT1-120L2SL_ 324 65150 535 0.525 18 – 361 : 1.56 1 : 1.39 15 V, 0.53 A FCT1-150L2SL_ 324 65223 470 0.600 18 – 361 : 1.89 1. When ordering, please specify a packaging code: FCT1-50L2SLD Packaging:D =13″ machine ready reel. EIA-481 embossed plastic tape (200 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, 0.3 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. 1 Primary 2 3 Recommended Land Pattern 8 7 Secondary 6 5 0.080 2,03 1 0.460 11,68 0.433 max 11,00 0.004 /0,10 0.041 1,05 0.600 max 15,24 0.050 1,27 0.413 10,50 4 0.024 0,60 5 0.50 max 12,7 Auxiliary 4 Secondary windings to be connected in parallel on PC board. Dot above pin1 Dimensions are in inches mm 0.098 2,50 1 8 0.098 2,50 Document 714 Revised 02/18/09