CABLE MODEM MAGNETICS Wideband RF Transformer CM03402 • Optimized for use in the upstream and downstream data path of cable modem applications • Designed for use with a variety of high frequency drivers • Ideal for cable distribution/drop amplifiers, set top boxes and home gateways • Excellent insertion loss and return loss characteristics • Operating temperature -40° to +85° C ELECTRICAL SPECIFICATIONS at 25° C Turns Ratio ±3% Insertion Loss dB max Pri : Sec 5MHz to 1GHz 5MHz to 50MHz 1:1 <1.0 25 Phase Unbalanced ° max Amplitude Unbalanced dB max 50MHz to 1GHz 5MHz to 1GHz 5MHz to 1GHz 22 6° 1 Return Loss dB min SCHEMATIC S554-5999-15 1 + GND 6 + 3 - 4 PRI : SEC Note: For optimum performance pin 6 is ground. ©2004 Bel Fuse Inc. Specifications subject to change without notice. 02.04 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com CABLE MODEM MAGNETICS Wideband RF Transformer CM03402 MECHANICAL S554-5999-15 Suggested PCB Pad Layout 0.040 [1.02] 0.170 [4.32] 0.106 [2.69] Pin 1 0.209 [5.32] 0.114 [2.90] 0.236 [5.99] 0.028 [0.71] 0.059 [1.50] 0.119 [3.01] 0.118 [3.00] 0.150 [3.82] 0.003 ±0.002 [0.07 ±0.05] 0˚- 8˚ 5X 0.030 [0.76] ©2004 Bel Fuse Inc. Specifications subject to change without notice. 02.04 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