T1/E1/CEPT/ISDN-PRI SMT TRANSFORMERS Small surface mount package Isolation voltage: 1500 Vrms minimum Extended temperature range: -40C to +85C Designed to meet Return Loss requirements of ITU G.703 Electrical Specifications @ 25C - Operating Temperature -40C to +85C LL C ww OCL Pri @ 25C (mH MIN) (H MIN) (pF MAX) Part Number Turns Ratio (Pri:Sec - 2%) TX1281 1CT:1 2.0 1.2 TX1284 1.26CT:1 1.2 1.0 DCR Pri ( MAX) DCR Sec ( MAX) 65 2.7 2.7 50 2.5 2.0 Mechanical Schematic TX12XX Weight ......................0.38 grams Tape & Reel .................1000/reel Tray .................................80/tray Inches Dimensions: mm Unless otherwise specified, all tolerances are .010 0,25 For More Information Pulse Worldwide Headquarters 12220 World Trade Drive San Diego, CA 92128 U.S.A. Pulse Europe Einsteinstrasse 1 D-71083 Herrenberg Germany Tel: 858 674 8100 Fax: 858 674 8262 Tel: 49 7032 78060 Fax: 49 7032 7806 135 Pulse China Headquarters B402, Shenzhen Academy of Aerospace Technology Bldg. 10th Kejinan Road High-Tech Zone Nanshan District Shenzen, PR China 518057 Tel: 86 755 33966678 Fax: 86 755 33966700 Pulse North China Room 2704/2705 Super Ocean Finance Ctr. 2067 Yan An Road West Shanghai 200336 China Pulse South Asia 135 Joo Seng Road #03-02 PM Industrial Bldg. Singapore 368363 Tel: 86 21 62787060 Fax: 86 2162786973 Tel: 65 6287 8998 Fax: 65 6287 8998 Pulse North Asia 3F, No. 198 Zhongyuan Road Zhongli City Taoyuan County 320 Taiwan R. O. C. Tel: 886 3 4356768 Fax: 886 3 4356823 (Pulse) Fax: 886 3 4356820 (FRE) 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. (c) Copyright, 2012. Pulse Electronics, Inc. All rights reserved. 1 pulseelectronics.com T669.B (04/12) Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Pulse: TX1281 TX1281T