ISDN TRANSFORMERS "U" INTERFACE P/N T-1053 Parameter Min. Typ. Max. Units (1) 13.0 14.5 15.95 mH Inductance (1-4), Shorted pins 2,3 (2) 12.4 Inductance (1-4), Shorted pins 2,3 Schematic Diagram 1 6 5 mH Leakage Inductance (3) 47 µH Interwinding Capacitance (3) 40 pF 2 3 DC Resistance With pins 2-3, Shorted (1-4) 12.5 Ω DC Resistance (5-6) 5.45 Ω Hi-Pot Pins (1-10) to Primary Impedance, Zp 2500 128 Secondary Impedance, Zs 4 VRM 135 60 141 Ω Ω 1. Measured at 40 kHz, 1.0 Vrms, 0 mAdc. 2. Measured at 40 kHz, 1.0 Vrms, 40 mAdc. 3. Measured at 100 kHz. Physical Dimensions Bottom View 1 2 3 4 8 7 6 5 inches (mm) 05/23/97 Rhombus Industries Inc. Transformers & Magnetic Products 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com