ISDN S Interface Transformer Turns Ratio ( + 2% ) PARAMETER Open Circuit Inductance SCHEMATIC DIAGRAM 1CT : 2CT MIN. MAX. 22 UNITS mHy Leakage Inductance 11 µHy Interwinding Capacitance (CW/W) 100 pF Distributed Capacitance (CD) 180 pF Primary DC Resistance 2.13 2.88 ohms Secondary DC Resistance 4.25 5.75 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. Unused Pins Omitted PHYSICAL DIMENSIONS inches (mm) RHOMBUS P/N: T-10405 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