HIGH FREQUENCY MAGNETICS T1/E1 Dual Transformer TM02126 • Optimized for Infineon PEB 2256, PEB 22504 and PEB 22554 line interface devices • Transmit transformer and receive transformer in one surface mount package • Center taps provided to facilitate phantom powering • Available with 75Ω tap on receive transformer as S553-6500-A5 • Meets ITU-T G.703 return loss from -40° to +85° C from 51 kHz to 3.072 MHz • 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% Primary Inductance at 10 kHz Leakage Inductance at 1 MHz IC : Line mH min µH max DCR Ω max Capacitance pF max Part Number Primary Secondary Pri to Sec S553-6500-A6 TX RX TX RX TX RX TX RX TX RX 1CT : 2.40CT 1CT : 1CT 1.0 1.8 0.3 0.5 0.6 0.7 1.4 0.7 35 Return Loss at 102 kHz 120Ω Application1 SCHEMATIC S553-6500-A6 25° C dB typ Primary 1 TX CT Secondary 1CT : 2.40CT RX CT TX RX TX RX 18 32 18 19 16 2 15 CT 3 14 4 13 5 12 1CT : 1CT -40 to +85° C dB min 6 11 7 10 CT 8 9 Secondary Primary 1. IC side terminated in 15 Ω for TX and 120 Ω for RX ©2002 Bel Fuse Inc. Specifications subject to change without notice. 08.02 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 T1/E1 Dual Transformer TM02126 MECHANICAL S553-6500-A6 0.500 [12.70] max Suggested PCB Pad Layout 0.375 0.285 [9.53] [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] 0.015 [0.38] 0.350 ±0.010 [8.89 ±0.25] 0.008 - 0.012 [0.20 - 0.30] 0.035 [0.89] 4˚ 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. 08.02 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