ISDN S Interface Transformer Turns Ratio ( + 2% ) SCHEMATIC DIAGRAM 1CT : 2CT PARAMETER MIN. MAX. 22 Open Circuit Inductance UNITS mHy Leakage Inductance 15 µHy Interwinding Capacitance (CW/W) 100 pF Distributed Capacitance (CD) 80 pF Primary DC Resistance 1.96 2.65 ohms Secondary DC Resistance 3.40 4.60 ohms Isolation (HI-POT) 2.0K VRMS TEST CONDITIONS: Oscillation Voltage = 700mV Oscillation Frequency = 10.0 KHz Inductance measured on Primary winding. Pins 1 - 3. MEETS THE PULSE WAVEFORM TEMPLATE OF CCITT I.430. Flammability: Materials used in the production of these units are UL94-VO and meet requirements of IEC 695-2-2 needle flame test. Primary is Line Side Unbalanced current at TE: ∆ Idc = 1 mA max. Longitudinal Conversion Loss - 10KHz to 300 KHz: 60dB min. PHYSICAL DIMENSIONS inches (mm) .560 (14.22) MAX. .560 (14.22) MAX. .360 (9.14) .400 (10.16) MAX. .020 (0.51) TYP. .100 (2.54) TYP. .010 (0.25) TYP. .110 (2.79) TYP. .740 (18.80) .710 (18.03) RHOMBUS P/N: T-13402 CUST P/N: DATE: 12/09/98 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