HIGH FREQUENCY MAGNETICS DS3/E3/STS-1 Quad Transformer • 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 and receive transformers in one surface mount package Meets ITU-T G.703 return loss from -40° to +85° C from 860 kHz to 51.55 MHz • • TM02135 • Operating temperature range -40° to +85°C • 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 IC : Line S554-6500-29 Primary Inductance at 100 kHz 25° C µH min -40° C µH min Leakage Inductance at 1 MHz Capacitance C w/w µH max pF max Return Loss at 1.72 MHz 75Ω Application1 25° C dB typ -40 to +85° C dB min TX RX TX RX TX RX TX RX TX & RX TX RX TX RX 1:1 1:1 80 80 40 40 0.09 0.09 10 25 25 18 18 1. Terminated in 75 Ω on IC side SCHEMATIC The module is symmetrical and either side can be connected to the IC or to the line. S554-6500-29 All transformers will support either TX or RX operation. Line Side IC Side 1 1:1 15 2 3 1:1 4 5 8 14 13 1:1 6 7 16 12 11 1:1 10 9 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 05.02 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 Quad Transformer TM02135 MECHANICAL S554-6500-29 0.485 [12.32] max Suggested PCB Pad Layout 0.375 0.285 [9.52] [7.24] max max 0.018 ±0.002 [0.46 ±0.05] 0.425 [10.80] 0.050 [1.27] 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 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. Tape and Reel Packaging 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 ©2002 Bel Fuse Inc. Specifications subject to change without notice. 05.02 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