Parameter PUSH PULL Transformer Turns Ratio (1-5) : (10-7) Schematic Diagram 1 10 3 Min. Nom. Max. 1 : 4.75 1:5 1 : 5.25 Primary Inductance Pins 1-5, All others windings open 550 µH Leakage Inductance(1) 0.6 µH Interwinding Capacitance(2) 116 pF Resistance pins (1-5) 0.11 ohms Resistance pins (10-7) 2.3 ohms Isolation (Hi-Pot) 1000 Operating Frequency 5 Units VRM 45 kHz 7 Current Rating (Primary Side) 500 mA 1. Pins 1-5, with 10-7 Shorted 2. Pins 1-10, All others open 10 9 8 7 6 Physical Dimensions inches (mm) .148 (3.75) 1 2 .148 (3.75) TYP. 3 4 5 .079 (2.0) .11 (2.8) .039 (1.00) TYP. .1.09 (27.7) .854 (21.7) MAX. .81 (20.6) .385 (9.77) .787 (20.0) .012 (0.30) TYP. .827 (21.0) .07 (1.80) Suggested Solder Pad Layout RHOMBUS P/N: T-1183 CUST P/N: DATE: 01/06/99 Rhombus Industries Inc. Transformers & Magnetic Products NAME: SHEET: 1 of 1 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 www.rhombus-ind.com FAX: (714) 896-0971