Prepared :Qingli Wu

Approved: Xu Wenbing

Date : 2001/02/04

Drawing no.: ISDN Transformer

REV.: A2

Page : 1/1

T1/CEPT/ISDN-PRI TRANSFORMERS

P/N:S5821 DATA SHEET

A. General Specifications:

1. Extended and standard temperature range models

2. Dual surface mount package contains both transmit and receive

3. Models matched to leading transceiver 1Cs

4. 1500Vrms isolation voltage

5. Operating temperature range:-40°C to +85°C

B. Electrical Specifications @ 25

1. Turns Ratio(Pri:Sec±5%) :12-10:1-3=1:2CT ,4-6:9-7=1:2CT

2. OCL : 1.2mH Min & 1.2mH Min @100KHz/0.2Vrms

3. L.L(sec) : 0.8 µH Max & 0.8 µH Max

4. Cw/w : 50 pF Max & 50 pF Max

5. DCR(Pri) : 1.0 Ω Max & 1.0 Ω Max

6. DCR(Sec ): 1.70 Ω Max & 1.70 Ω Max

7. Primary Pins : 12-10 , 4-6

C. Schematics & Mechanical: