HIGH FREQUENCY MAGNETICS DS3/E3/STS-1 Dual Transformers TM02129 * Optimized for line transceivers operating at E3, DS3 or STS-1 rates: 34.368 Mb/s, 44.736 Mb/s, 51.84 Mb/s * Transmit transformer and receive transformer in one surface mount package Meets ITU-T G.703 return loss from -40 to +85 C from 860 kHz to 51.55 MHz * * * Operating temperature range -40 to +85C * Meets IEC 695, 2-2 flammability requirements * PWB Process Capability: standard printed wiring board assembly techniques, total-immersion cleaning * Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias * Interwinding breakdown voltage: 1500 Vrms min UL 1950 approved: file number E150991 ELECTRICAL SPECIFICATIONS at 25 C Turns Ratio 2% Part Number Primary Inductance at 100 kHz 25 C H min Pri : Sec -40 C H min Leakage Inductance at 1 MHz Capacitance C w/w H max pF max Return Loss at 1.72 MHz 75 Application1 25 C dB typ -40 to +85 C dB min Coil A Coil B Coil A Coil B Coil A Coil B Coil A Coil B Coil A & B Coil A Coil B Coil A Coil B S554-6500-15 1:1 1:1 80 80 40 40 0.09 0.09 10 25 25 18 18 S554-6500-16 1:1 1CT : 1CT 80 80 40 40 0.09 0.10 10 25 25 18 18 S554-6500-17 1 : 2CT 1:1 80 80 40 40 0.09 0.09 10 25 25 18 18 S554-6500-18 1:1 1 : 2CT 80 80 40 40 0.09 0.09 10 25 25 18 18 1. Terminated in 75 for 1 : 1 ratios and 300 for 1 : 2 ratios SCHEMATICS S554-6500-15 Primary 1 Coil A 2 1:1 S554-6500-16 Secondary 16 15 3 14 4 13 5 12 6 11 7 1:1 1:1 Secondary 16 15 3 14 4 13 5 12 1CT : 1CT 6 11 Coil B 7 10 8 9 10 Coil B 8 Primary 1 Coil A 2 9 (c)2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 1 HIGH FREQUENCY MAGNETICS DS3/E3/STS-1 Dual Transformers TM02129 SCHEMATICS S554-6500-18 S554-6500-17 Secondary 1 Primary 16 2CT : 1 Coil A 2 15 3 14 4 5 1:1 Primary 1 Coil A 2 1:1 Secondary 16 15 3 14 13 4 13 12 5 12 1 : 2CT 6 11 6 11 Coil B 7 10 Coil B 7 10 8 9 8 9 MECHANICAL S554-6500-15 S554-6500-16 S554-6500-17 S554-6500-18 0.485 [12.32] max Suggested PCB Pad Layout 0.375 0.285 [9.53] [7.24] max max 0.425 [10.80] 0.050 [1.27] 0.018 0.002 [0.46 0.05] 0.050 [1.27] 0.025 [0.64] 0.070 [1.78] 0.225 [5.72] max 0.004 [0.10] 0.003 [0.08] min Tape and Reel Packaging 0.350 0.010 [8.89 0.25] 0.008 - 0.012 [0.20 - 0.30] 0.035 [0.89] 6 nom Dimensions are in inches [millimeters]. Standard dimension tolerance is 0.005 [0.13] unless otherwise noted. 24 mm wide by 12 mm pitch; 13 inch OD, 4 inch ID 750 modules per reel, maximum Meets ANSI/EIA 481-2 Carrier Tape Standards - JEDEC SO Package (c)2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com page 2