ISDN TRANSFORMERS "U" INTERFACE P/N T-1068 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) 25 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 2500 Primary Impedance, Zp 128 Secondary Impedance, Zs 4 VRM 135 141 Ω Ω 50 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. .92 (23.4) MAX. .658 (16.20) .748 (18.99) MAX. 1 6 2 5 .141 (3.59) .424 (10.78) 3 .319 (8.10) 4 Top View .33 (8.4) Physical Dimensions .18 (4.5) inches (mm) .032 x .012 (.81 x .30) 4 3 2 5 1 6 .55 (14.0) MAX. .62 (15.6) MAX. Bottom View 05/27/98 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