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| prepared :qingli wu approved: xu wenbing date :2001/02/22 drawing no.: isdn transformer rev.: a0 page : 1/1 t1/e1/cept/isdn-pri transformer p/n: S1048 data sheet a. general specifications: 1. dual smt package contains both transmit and receive transformers. 2. common footprint and pinout with a choice of operating temperature ranges. 3. models matched to leading transceiver ics 4. ic grade transfer-molded package withstands 235 0 c ir reflow 5. patented interlock base construction for high reliability b. electrical specifications @ 25 0 c : 1. turns ratio(pri:sec5%) : 1ct:141ct &1ct:1ct 2. ocl: 350 min @100khz/0.2vrms 3. l.l: 0.8 h max(pin16-15 short 10-11) & 0.5 h max(pin 1-2 short 6-7) 4. cw/w: 28 pf max(pin1-2 to 7-6) & 25 pf max(pin16-15 to 10-11) 5. dcr pri : 0.70 max & 0.70 max 6. dcr sec: 0.90 max & 0.90 max 7. primary pins : 16-15,1-2 8. hi-pot :1500vrms. c. schematic & mechanical :
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