ISDN S-Interface Transformers Meets the Pulse Waveform Template of CCITT I.430 when recommended Transformer and Chip pair are used. Excellent Longitudinal Balance 2kVRMS & 4kVRMS min. Isolation Electrical Specifications 1,2,3,4 at 25OC Isolation (Min.) 4000VRMS 2000VRMS Part. No. Part. No. Turns OCL min. Ratio Pri ( + 2%) ( mH ) LL max. Sec. ( µH ) CW/W max. ( pF ) CD pri. max. ( pF ) DCR Pri. DCR Sec. + 15% + 15% (Ω) (Ω) Schem. Style T-10400 T-10450 1:1 22 5 100 40 2.4 2.4 A T-10401 T-10451 1:1.8 22 15 100 140 2.5 4.2 B T-10402 T-10452 1:2 22 15 100 80 2.3 4.0 A T-10403 T-10453 1:2.5 22 30 100 150 2.5 5.8 B T-10404 T-10454 1:2.5 22 15 / 40 100 110 2.5 5.8 C T-10405 T-10455 1:2 22 11 100 180 2.5 5.0 A 1. Primary is Line Side 2. OCL: Primary Inductance @10 kHz and 700 mV 3. Unbalanced current at TE: ∆ Idc = 1 mA max. 4. Longitudinal Conversion Loss 10KHz to 300 KHz 60dB min. Schematic "A" Schematic "B" Schematic "C" P ri P ri Sec Sec Pri Sec All of the above parts are available as Surface Mount components. For Surface Mount part number replace the second digit of thru hole part number with "3". ( i.e. T-10400 = T-13400) NOTE: Unused Pins Omitted as per Schematic Diagrams Surface Mount Package, T-134XX Tape and Reel Available Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 13 ISDN-SNG - 9/97 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971