ISDN S Interface Transformer REINFORCED INSULATION PER EN 41003/EN 60950 1CT : 1.8CT* Turns Ratio ( + 2% ) PARAMETER MIN. MAX. 22 Open Circuit Inductance SCHEMATIC DIAGRAM UNITS mHy Leakage Inductance 15 µHy Interwinding Capacitance (CW/W) 100 pF 7 1 6 Pri Distributed Capacitance (CD) 140 pF Primary DC Resistance 2.13 2.88 ohms Secondary DC Resistance 3.57 4.83 ohms Isolation (HI-POT) 4.0K 2 Sec 5 3 4 VRMS TEST CONDITIONS: Oscillation Voltage = 700mV Oscillation Frequency = 10.0 KHz Inductance measured on Primary winding. Pins 1 - 3. *Short Pins 5 + 6 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) .558 (14.2) MAX. 1 .400 (10.16) MAX. .400 (10.16) 7 6 2 .200 (5.08) .558 (14.2) MAX. .558 (14.2) MAX. 5 3 .120 (3.05) MIN. .100 (2.54) TYP. .200 (5.08) 4 .558 (14.2) MAX. RHOMBUS P/N: T-10451 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