T1/CEPT/ISDN-PRI TRANSFORMER P/N:S4993S DATA SHEET A. Electrical Specifications@ 25°C : 1. DCR: 1.0 Ω TYP(@PIN 1-2 & PIN 3-4) 1.0 Ω TYP(@PIN 5-6 & PIN 7-8) 2. OCL:( @10KHz /0.1Vrms) : 30 mH Min@PIN 5-8(6-7 short) 3. Cw/w: 100 pF Max PIN 1-3 @10KHz/0.1Vrms 4. Turn Ratio (±5%): 1:1:1:1 5. Isolation Voltage: 1500 Vrms/0.5mA 2Sec(PRI SEC) 500 Vrms/0.5mA 2Sec (1-3, 5-7) B. Schematics & Mechanical : Prepared :Qingli Wu Approved: Xu Wenbing Date :2001/01/31 Drawing no.: ISDN Transformer REV.: A1 Page : 1/1