Flyback Transformer ELECTRONICS INC. EPC3143G • Used in SMPS Flyback Topology • UL1446 Clas B Insulating System • UL94V-0 Recognized Components • Switching Frequency : 275 KHz • Low Core Loss Materials • 2250 Vac Isolation Electrical Parameters @ 25° C Leakage Inductance (µH Typ.) Inductance (µH ± 10%) Turns Ratio (±2%) DCR (Ω Typ.) @ 10 KHz, 0.1 Vrms 30 1.6 Pins 1-2 Pins 1-2 w/all others shorted .164 Pins 1-2 .590 Pins 3-4 .017 Pins 10-8 .018 Pins 5-6 1:.444:.25:.111 Pins 1-2:3-4:10-8:5-6 • Operating Temperature : -40°C to +85°C • Schematic 1 10 2 8 3 6 4 5 33-57 Vdc 7.0 V (2 A Max.) 13 V (.005 A) 3.3 V (1A Max.) Package .032 (0.81) .800 Max. (20.32) 1.035 (26.29) .070 (1.78) .197 (5.00) PCA EPC3143G Date Code .591 (15.00) .197 (5.00) Suggested Pad Layout .760 (19.30) .138 (3.51) .138 (3.51) 0.865 (21.97) .663 (16.84) .085 (2.16) .780 (19.80) .430 Max. ( ) .995 Max. (25.27) 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. CSC3143G Rev. 1 5/7/03 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com