prepared :luo ming li approved: xu wenbing date : 2001/03/15 drawing no.: isdn transformer rev.: a3 page : 1/1 t1/e1/cept/isdn-pri quad transformers p/n: 4S1008 data sheet a. general specifications 1. quad transformers in a surface mount package supports two t1/e1 ports 2. available in transmit and/or receive configurations 3. models matched to leading quad and dual t1/e1/cept transceivers b. electrical specifications @ 2 5 c 1. turns ratio: 1:1.36 2% pin1-3:32-30/10-12:23-21 p 100% 1:2 2% pin28-26:5-7/19-17:14-16 2. ocl : 1.2 mh min pin1-3/10-12/28-26/19-17 @100khz 0.2 vrms 100% 3. cw/w : 30 pf max pin1-3 to 32-30/10-12 to 23-21 @100khz 0.2 vrms sample 35 pf max pin28-26 to 5-7/19-17 to 14-16 @100khz 0.2 vrms 4. l/l : 0.7 h max pin1-3/10-12 (32-30/23-21 short) @100khz 0.2 vrms sample 0.8 h max pin28-26/19-17 (5-7/14-16 short) @100khz 0.2 vrms 5. dcr : 0.55 max pin1-3/10-12/28-26/19-17 sample 0.7 max pin32-30/23-21 1.0 max pin5-7/14-16 6. primary pins : 1-3, 10-12, 19-17, 28-26 7. hi-pot: 1500 vrms 1 minute pin(1,5,10,14) to(17,21,26,30) or 1650 vrms 6 seconds 100% 500 vrms 1 second pin(3,30,23,10)to(7,26,19,14) c. schematic & mechanical:
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