T3/DS3/E3/STS-1 TRANSFORMERS Dual SMT, Extended Temperature Range Dual SMT package contains both transmit and receive transformers Operating temperature of -40C to +85C Models matched to leading transceiver ICs Return loss meets requirements of G.703 1500 Vrms isolation per UL1459 and UL1950 Electrical Specifications @ 25C -- Operating Temperature -40C to +85C Turns Ratio (2%) Part Number T3020 OCL Primary @ 25C (H MIN) OCL Primary @ -40C (H MIN) LL (H MAX) CW/W (pF MAX) TX RX TX RX TX RX TX RX TX RX 1:2CT 1:1 40 100 19 40 .120 .120 10 10 Primary Pins Isolation Voltage (Vrms MIN) Package/ Schematic TX RX 1500 BH/1 16-14 6-8 16-14 11-9 T3021 1:2CT 1:2CT 40 40 19 19 .100 .100 10 10 1500 BH/4 TX3025 1CT:1CT 1:1 100 100 40 40 .120 .120 10 10 1500 BH/2 6-8 16-15 TX3026 1:2CT 1:1 100 100 40 40 .120 .120 10 10 1500 BH/3 7-8 16-15 NOTE: Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (ex: T3020T). Mechanicals Schematics BH .375 MAX 9,53 T3020 (DATE CODE) (COUNTRY OF ORIGIN) 16 .350 8,89 .505 MAX 12,83 .280MAX 7,11 .328 8,33 .050 1,27 .075 1,91 1 14 11 2 3 1 .050 1,27 .245 MAX 6,22 .002 16X .018 0,46 0,05 6 9 16 8 1 15 11 10 9 2 2 6 7 8 .029 .001 16X 0,74 0,03 .350 8,89 SUGGESTED PAD LAYOUT 16 15 11 10 9 16 14 11 9 .010 0,25 .004/0,10 16 SURFACES Weight . . . . . . . . . . . . . .1.0 grams Tape & Reel . . . . . . . . . . . .600/reel Tube . . . . . . . . . . . . . . . . . .40/tube 1 0- 8 2 3 7 8 1 2 3 4 6 7 8 Dimensions: Inches mm Unless otherwise specified, all tolerances are .010 0,25 US 858 674 8100 * UK 44 1483 401 700 * France 33 3 84 35 04 04 * Singapore 65 6287 8998 * Taiwan 886 2 2698 0228 * Hong Kong 852 2788 6588 * http://www.pulseeng.com T655.A (6/03) T3/DS3/E3/STS-1 TRANSFORMERS Dual SMT, Extended Temperature Range Application Notes 1. The transformers have been developed for use as transmit and receive transformers in T3 or DS3 links, using bit rates of 44.736 Mbps and B3ZS coding on coaxial cable. The characteristics allow compliance with the pulse templates of CCITT G.703 as well as ATT T.A.34. The transformers are also suitable for the E3 interface at 34.368 Mbps with HDB3 coding or STS-1 applications, at 51.84 Mbps according to Bellcore TA-NWT-000253. 2. Bandwidth specifications are typical in a 75 system. Return loss meets the requirements of G.703. Materials used in the products are UL94-V0 recognized. Products meet the requirements of IEC 695-2-2 (Needle Flame Test). 3. For those applications requiring a 1:1 turns ratio on the transmit side, use only one half of the secondary (2CT) winding. 4. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (i.e. TX3026T). 5. For other T3/DS3/E3/STS-1 Transformers, please see data sheets T606, T619, T672, T663 and T668. 6. Transformer Selection Guide - Please contact Pulse Applications Engineering or see our website for the latest Pulse Transformer Selection Guide. For More Information : UNITED STATES (Worldwide) UNITED KINGDOM (Northern Europe) FRANCE (Southern Europe) SINGAPORE (Southern Asia) TAIWAN, R.O.C. (Northern Asia) HONG KONG (China/Hong Kong) 12220 World Trade Drive San Diego, CA 92128 U.S.A. http://www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262 1 & 2 Huxley Road The Surrey Research Park Guildford, Surrey GU2 5RE United Kingdom TEL: 44 1483 401700 FAX: 44 1483 401701 Zone Industrielle F-39270 Orgelet France TEL: 33 3 84 35 04 04 FAX: 33 3 84 25 46 41 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 TEL: 65 6287 8998 FAX: 65 6280 0080 3F-4, No. 81, Sec. 1 HsinTai Wu Road Hsi-Chih, Taipei Hsien Taiwan, R.O.C. Tel: 886 2 2698 0228 FAX: 886 2 2698 0948 9/F, Phase 2, Tai Sang Shatin Warehouse Centre 6 Wong Chuk Yeung Street Fotan, Shatin, Hong Kong TEL: 852 2788 6588 FAX: 852 2776 1055 DISTRIBUTOR Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. Printed on recycled paper. (c)2003, Pulse Engineering, Inc. T655.A (6/03)