PoE Flyback Transformer ELECTRONICS INC. EPC3391G & EPC3391G-LF • 45W PoE Applications • Designed to work with LT1725 • Used in Flyback Topology Converter • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to +125°C • Operating Temperature : 0°C to +70°C • UL 1446 Class B Insulation System • Duty Cycle : 50% Max. Electrical Parameters @ 25° C Inductance (µH ± 10%) DCR (Ω Typ.) Turns Ratio Leakage Inductance (µH Max.) @ 100 KHz, 1.0 Vrms Dielectric Rating (Vrms) @ 100 KHz, 1.0 Vrms 42 0.1 0.135 0.06 2.4:1 0.9:1 1.0 1500 Pins 1-3 Pins 1-3 Pins 5-6 Pins 8-11 Pins 1-3:5-6 Pins 1-3:8-11 Pins 1-3 All other wdg’s shorted Wdg’s - Wdg’s Wdg’s - Core Package Schematic Pin 1 I.D. Pri. (36-57 Vdc) .810 (20.57) Marking: PCA EPC3391G(-LF) D.C. .450 Max. (11.43) Vcc 15 V (10 mA) 1 3 8 5 11 Sec. 36 V (1.25 A) 6 0.004 (.100) .969 (24.60) 6 .084 (2.13) .827 (21.00) 7 .028 (.720) .930 (23.62) .130 (3.30) .050 (1.27) PCB Layout (Top View) 12 .118 (3.00) 1 .118 (3.00) Notes : Component Outline 1.250 x .850 (31.75 x 21.60) EPC3391G EPC3391G-LF 1. Lead Finish SnPb Hot Tin Dip (Sn) 2. Peak Solder Rating 225°C 260°C (for wave solder process Only) 3. Weight 4. Packaging Information (Tube) 11.1 grams 11.1 grams 25 pcs / tube 25 pcs / tube Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3391G & -LF Rev. 1 12/13/07 JDG TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com