ISDN S Interface Transformer Turns Ratio ( + 2% ) 1CT : 1CT PARAMETER MIN. MAX. 22 Open Circuit Inductance mHy 5 µHy Interwinding Capacitance (CW/W) 100 pF Distributed Capacitance (CD) 40 pF Primary DC Resistance 2.76 ohms Secondary DC Resistance 2.76 ohms Leakage Inductance 2.0K Isolation (HI-POT) SCHEMATIC DIAGRAM UNITS VRMS TEST CONDITIONS: Oscillation Voltage = 700mV Oscillation Frequency = 10.0 KHz Inductance measured on Primary winding. Pins 1 - 3. Flammability: Materials used in the production of these units are UL94-VO and meet requirements of IEC 695-2-2 needle flame test. MEETS THE PULSE WAVEFORM TEMPLATE OF CCITT I.430. Primary is Line Side Unbalanced current at TE: ∆ Idc = 1 mA max. Longitudinal Conversion Loss - 10KHz to 300 KHz: 60dB min. T-13400 YYWW PHYSICAL DIMENSIONS inches (mm) .560 (14.22) MAX. .560 (14.22) MAX. .400 (10.16) MAX. .010 (0.25) TYP. .020 (0.51) TYP. .200 (5.08) TYP. .035 (0.89) TYP. .110 (2.79) TYP. .740 (18.80) .710 (18.03) RHOMBUS P/N: T-13400 CUST P/N: DATE: 08/27/2002 Rhombus Industries Inc. Transformers & Magnetic Products www.rhombus-ind.com NAME: SHEET: 1 OF 1 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Phone: (714) 898-0960 FAX: (714) 896-0971