Document 398 Flyback Transformer For National Semiconductor LM5020 PWM Controller • Designed to operate up to 1 MHz with 36 –72 V input. • 3.3 V, 4.5 A output with secondary windings connected in parallel. Bias output is 12 V. • Ideal for 13 W, IEEE 802.3af-compliant, PoE applications. Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 12.8 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: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf Turns ratio6 Capacitance7 Ipk3 Isolation8 Part L at 0 A2 L at Ipk3 DCR max (Ohms)4Leakage 1 5 number ±10% (µH) ±10% (µH) pri aux sec L (µH) pri : secpri : bias (pF) (A)(Vrms) B0695-AL_ 110 99.0 0.133 0.656 0.019 1.11 1 : 0.231 : 0.69 110 1.51500 1. When ordering, please specify a packaging code: B0695-ALD Packaging:D =13″ machine ready reel. EIA-481 embossed plastic tape (175 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 10 kHz, 0.1 Vrms, 0 Adc. 3.Ipk is the peak current drawn at minimum input voltage. Dot indicates pin 1 1 12 0.130 3,30 0.930 23,62 1 B0695-AL XXXXY 0.810 max 20,57 0.028 0,711 6 0.050 1,27 Recommended Land Pattern 4 12 11 10 Pri Sec 6 9 8 7 1 7 1.181 max 30,00 4. DCR for the secondary is per winding. 5. Leakage inductance measured between pins 4 and 6 with all other pins shorted. 6. Turns ratio is with the secondary windings connected in parallel. 7. Capacitance measured between pins 3 and 4 with other pins shorted. 8. Isolation is measured from the primary and bias to the secondary. 9. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 0.118 3,0 0.118 3,0 Parts manufactured prior to December 2011 may be marked differently. Bias 3 Secondary windings to be connected in parallel on PC board. 0.450 max 11,43 0.080 2,03 0.827 21,00 0.969 24,60 0.004 /0,10 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] Document 398 Revised 12/19/11 © 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.