PoE Flyback Transformer ELECTRONICS INC. EPC3393 & EPC3393-LF • 45W PoE Application • Designed to work with LT1725 • Used in Flyback Topology Converter • Bobbin : UL94V-0 Recognized Materials • 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 @ 100 KHz, 1.0 Vrms 42 0.020 0.308 0.020 2.4:1 1:1 1.0 1500 Pins 1-2 Pins 1-2 Pins 4-5 Pins 7-10 Pins 1-2:4-5 Pins 1-2:7-10 Pins 1-2 All other wdg’s shorted Wdg’s - Wdg’s Wdg’s - Core Package Schematic .738 (18.75) .148 (3.75) 5 Places 1.010 (25.65) 11 .787 (20.00) 1.020 (25.91) Pri. (36-57 Vdc) PCB Layout (Top View) 5 2 7 4 10 Sec. 36 V (1.25 A) 5 Component Outline 1.06 x 1.06 (27.00 x 27.00) .650 (16.50) .177 (4.50) .118 (3.00) .197 (5.00) 1 Ø = .042 Drill (1.07) Ø = .090 Pad (2.29) .197 (5.00) 4 Places PCA EPC3393(-LF) D.C. Vcc 15 V (10 mA) 6 1 Pin 1 I.D. Dielectric Rating (Vrms) .787 (20.00) .148 (3.75) EPC3393 EPC3393-LF 1. Lead Finish Notes : SnPb Hot Tin Dip (Sn) or (SnCu) 2. Peak Solder Rating 225°C 260°C (for wave solder process Only) 3. Weight 4. Packaging Information (Tube) 21.6 grams 21.6 grams 20 pcs / tube 20 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. CSC3393 & -LF Rev. - 12/10/07 JDG TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com