U Interface Transformer Turns Ratio ( + 3 % ) 1 : 1 :1.6 : 1.6 PARAMETER MIN. TYP. MAX. UNITS Primary Inductance1 10.8 12.0 13.2 mH Schematic Diagram Leakage Inductance1 24 µH Interwinding Capacitance1 29 pF Primary DC Resistance 4.5 ohms Primary Secondary Pins 1-4. 4 5 3 6 2 7 1 8 Pins 1-4 Secondary DC Resistance 4.0 ohms Pins 2-3 or 6-5. Isolation (Hi-Pot) 2000 VRMS DC Bias 60 mA 1. Tested @ 10kHz & 100 mVRMS Physical Dimensions inches (mm) 1.02 (26.0) MAX. .512 (13.0) MAX. PIN POSITION GRID 0.100 (2.54) HOLES FOR BOBBIN PINS HOLES FOR CLIPS .17 (4.3) 1 2 3 4 8 7 6 5 .025 (0.63) DIA. .150 (3.81) 1 8 2 7 3 6 4 5 .200 (5.08) .150 (3.81) Clamps: .024 X .016 (0.6 X 0.4) .768 (19.5) MAX. RHOMBUS P/N: T-1028 CUST P/N: DATE: 03/09/98 Rhombus Industries Inc. Transformers & Magnetic Products NAME: SHEET: 1 of 1 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com