Document 715 4 W Forward Mode Transformers • Designed for forward topology operating at 250 kHz • Five outputs from 3.3 V to 15 V; 9 – 18 V input • 1500 Vrms isolation from primary and aux to the secondary • Specified by National Semiconductor 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 2.0 – 2.1g 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 350 per 13″ reel Plastic tape: 32 mm wide, 0.42 mm thick, 20 mm pocket spacing, 9.16 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. Leakage Input 3 Turns ratio5 Part Inductance2 DCR max (mOhms) inductance4 voltage number1 nom (µH) pri sec aux max (µH) range (V) pri : sec pri : aux Output6 FCT1-33K2SL_ 120 48 53720 0.195 9 – 181 : 1.0 1 : 2.8 3.3 V, 1.2 A FCT1-50K2SL_ 120 48 88735 0.205 9 – 181 : 1.4 1 : 2.8 5 V, 0.8 A FCT1-90K2SL_ 120 48 218745 0.165 9 – 181 : 2.3 1 : 2.8 9 V, 0.44 A FCT1-120K2SL_120 48 420 705 0.170 9 – 181 : 3.0 1 : 2.8 12 V, 0.33 A FCT1-150K2SL_120 48 532 732 0.215 9 – 181 : 3.7 1 : 2.8 15 V, 0.27 A 1. When ordering, please specify a packaging code: FCT1-50K2SLD Packaging:D =13″ machine ready reel. EIA-481 embossed plastic tape (350 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, 0.2 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 Dot above pin1 0.355 max 9,02 0.004 /0,10 Recommended Land Pattern 8 7 Secondary 6 5 0.080 2,03 1 0.370 9,40 0.041 1,05 0.520 max 13,21 0.098 2,50 0.339 8,60 5 0.028 0,70 4 0.430 max 10,92 Auxiliary 4 Secondary winding 7 – 6 not used on FCT1-120K2SL and FCT1-150K2SL. For other parts, secondary windings to be connected in parallel on PC board. 0.050 1,27 Dimensions are in 1 0.098 2,50 8 inches mm US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 715 Revised 02/18/09 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.