T1/CEPT/ISDN PRI INTERFACE TRANSFORMER UL 1459 Recognized Turns Ratio ( + 5% ) PARAMETER *1:0.633:0.633 MIN. 1Open Circuit Inductance MAX. 1.5 UNITS mHy 1Primary Leakage Inductance 0.3 µHy 1Secondary Leakage Inductance 0.4 µHy 1Interwinding Capacitance (C W/W) 18 pF Primary DC Resistance 0.7 ohms Secondary DC Resistance 0.5 ohms Isolation (HI-POT) 1.5 Kv VRMS E.T. 16 V-µS *Primary Pins 5-6. A center tap can be formed by shorting pins 1+4 creating a 1:1.26CT Transformer 1 R Temperature Characteristics: -40o C 900 µH min. (40% drop in inductance) +85o C 1.7 mH min. (15% growth in inductance) Typical part: 2.0 mH @ +25o C 2.3 mH @ +85o C 1.2 mH @ -40o C Parts shipped in anti-static tubes. 50 pieces per tube PHYSICAL DIMENSIONS All dimensions in inches (mm): Tested at 772 kHz & 100 mV SCHEMATIC DIAGRAM: RHOMBUS INDUSTRIES INC. FSCM NO. 16714 RHOMBUS P/N: T-10222 CUST P/N: 11/04/97 DATE: 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