Prepared : Qingli wu

Approved: Xu wenbin

Date : 2001/01/28

Drawing no.: ISDN Transformer

REV.: A0

Page : 1/1

T1/CEPT/ISDN-PRI TRANSFORMER

P/N: S1021 DATA SHEET

A. General Specifications:

1. Single port T1/E1 solution .

2. Configurable for TP and Coax cable termination .

3. Transfer-molded, IC-grade packaging .

4. Dual surface mount, small package .

B. Electrical Specifications@ 25°C :

1. Turns Ratio(Pri.:Sec±2%): 2CT:1/1.26 (1-3:15-14/16-14) & 2CT:1/1.26(11-9:7-8/6-8)

2. OCL: 1.5 mH Min. & 1.5 mH Min.

3. Cw/w: 40 pF Max. & 40 pF Max.

4. Leakage Inductance : 0.5 µH Max. & 0.5 µH Max

5. PRI. DCR : 0.70 Ω Max. & 0.70 Ω Max.

6. SEC. DCR : 1.0 Ω Max. & 1.0 Ω Max.

7. Primary Pins : 1-3, 11-9

8. PRI./SEC. Isolation : 1500Vrms.

C. Schematic & Mechanical :