Prepared :Qingli Wu

Approved: Xu Wenbing

Date :2001/07/16

Drawing no.: ISDN Transformer

REV.: A3

Page : 1/1

ISDN T1/E1 TRANSFORMER

P/N: S4937A DATA SHEET

A. General Specifications:

1. Used the widely -accepted “T” case packaging

2. Models available for use with most E1/T1 transformer chips

Electrical Specifications@ 25C

1. Turns Ratio: 1:1.36

2. OCL : 1.5 mH Min

3. L.L : 0.80 µH Max

4. Cw/w : 35 pF Max

5. DCR Pri. : 0.70

6. DCR Sec. : 1.0

7. Primary Pins : 5-6

8. HI-POT : 1500 Vrms

C. Schematic & Mechanical: