Document 762 25 W Forward Mode Transformers • • • • Designed for forward topology operating at 250 kHz Three different outputs: 3.3 V, 5.0 V and 12 V 33 – 57 V input; excellent for PoE applications 1500 Vrms isolation from primary and bias to the secondary Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 6.5 – 6.7 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. 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) Mean Time Between Failures (MTBF) / Failures in Time (FIT) Calculated per Telcordia SR-322 26,315,789 hours / 38 per billion hours 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 (µH) FCT1-33M22SL_ 95 FCT1-50M22SL_ 95 FCT1-120M22SL_ 95 DCR max (mOhms)3 pri sec bias 115 8.0 347 144 18.0 298 150 62.5 352 Leakage inductance4 max (µH) 1.44 0.880 0.725 Input voltage range (V) 33 – 57 33 – 57 33 – 57 Turns ratio5 pri : sec pri : bias Output6 1 : 0.16 1 : 0.63 3.3 V, 7.2 A 1 : 0.25 1 : 0.53 5.0 V, 4.8 A 1 : 0.53 1 : 0.53 12 V, 2.0 A 1. When ordering, please specify a packaging code: FCT1-50M22SLD 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, 0.1 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. Bias winding output is 12 V, 20 mA. 7. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 1 6 7 Primary 0.061 1,55 0.590 14,99 1 Dot above pin1 0.500 max 12,70 0.004 /0,10 0.039 1,00 0.699 max 17,75 0.512 13,00 0.050 1,27 6 5 0.028 0,70 Secondary 2 4 10 9 Recommended Land Pattern 0.530 max 13,46 Bias 1 5 Secondary windings to be connected in parallel on PC board. Dimensions are in inches mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 10 0.098 2,50 0.098 2,50 Document 762 Revised 07/24/09