Document 523 Flyback Transformer For Texas Instruments LM5071 PoE PD Controller • Designed to operate in continuous mode at 250 kHz • TI App Note AN‑1430 specifies 84% efficiency at 3 A. • 1500 Vrms, one minute isolation from primary and aux to secondary Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 5.97 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 Part L at 0 A2 L at Ipk3 Input number1 ±10% (µH) min (µH) voltage (V) DA2383-AL_ 127.0 114.3 24 –60 DCR max Leakage L4Turns Ipk3 Outputs5 (Ohms) max (µH) ratios (A) 0.310 (aux) 1.25 2 : 1(pri : aux) 1.0 10 V, 0.05 A (aux) 0.012 (sec) 6 : 1(pri : sec ) 3.3 V, 4.0 A (sec) 0.255 (pri) 1. When ordering, please specify packaging code: DA2383-ALD 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 for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc. 3.Ipk is peak primary current drawn at minimum input voltage. 4. Leakage inductance measured on the primary winding with all secondary pins shorted. 5. Output of the seconday is with the windings connected in parallel. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 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 5 0.028 0,70 6 0.590 14,99 1 8 9 Pri Sec 4 7 6 1 Aux Recommended Land Pattern 0.530 max 13,46 1 0.080 2,03 0.050 1,27 5 2 0.098 2,50 0.098 10 2,50 Dimensions are in 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] Secondary windings to be connected in parallel on the PC board Document 523 Revised 10/29/08 © 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.