Flyback Transformer ELECTRONICS INC. EPA3869 • Used in SMPS-Flyback Topology • • Bobbin : UL94V-0 Recognized Materials • • UL 1446 Class B Insulation System • • Gapped Transformer • • Low Core Loss Materials • • Works up to 200 KHz Switching Frequency • Primary Specification Inductance (µH ± 10%) DCR (Ω Max.) Leakage Inductance (µH Max.) Turns Ratio @ 100 KHz, 0.1 Vrms @ 100 KHz, 0.1 Vrms 150 1.8 Pins 1-3,2-4 Pins 1-3,2-4 5.5 Pins 7-5,8-6 77:77 Pins 1-3:2-4 77:140:140 Pins 1-3:7-5:8-6 TBD 500 Pins 1,2-3,4 All other wdg’s shorted Pri. to Sec. Wdg’s Package .500 Max. (12.70) 8 Schematic .100 (2.54 8 .039 (1.00 3 2 70 Vdc 4 1 5 PCA EPA3869 D.C. Pin # 1 I.D. Dielectric Rating (Vac) 1 .500 Max. (12.70) .450 Max. (11.43) .300 (7.62) 70 Vdc 6 7 70 Vdc 5 4 .070 Typ. (1.80) .126 (3.20) .100 (2.54) .018 (.450) .300 (7.62 Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSA3869 Rev. - 4/16/02 Product performance is limited to specific parameters. Data subject to change without prior notice. TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com