VOICE OVER IP MAGNETICS Broadband Transformers S558-5500-13 • Support 10 Mbps and 100 Mbps VoIP applications • Designed to meet 350mA balanced DC line current • Compliant with IEEE 802.3 standards • Operating temperature 0° to 70° C • Minimum interwinding breakdown voltage of 1500 Vrms ELECTRICAL SPECIFICATIONS AT 25° C Turns Ratio ±3% Insertion Loss dB min Return Loss TXIN : TXO RXIN : RXO 100kHz to 100MHz 2MHz to 30MHz 60MHz to 80MHz 1CT : 1CT 1CT : 1CT -0.5 -16 -10 Primary Inductance µH min 400 Leakage Inductance µH max DCR Ω max Interwinding Capacitance pF max 0.4 20 TXIN TXO RXIN RXO 0.5 0.5 0.5 0.5 SCHEMATIC S558-5500-13 1CT : 1CT 1 6 2 5 3 4 ©2005 Bel Fuse Inc. Specifications subject to change without notice. 06.05 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 1 VOICE OVER IP MAGNETICS Broadband Transformers S558-5500-13 MECHANICAL S558-5500-13 Suggested Pad Layout 0.100 [2.54] 0.30 [7.62] max 0.285 [7.24] max 0.375 [9.53] 0.350 [8.89] 0.425 [10.80] S558-5500-13 0.100 [2.54] pitch 0.018 ±0.002 [0.46 ±0.05] 0.070 [1.78] 0.025 [0.62] 0.003 [0.08] min 0.225 [5.73] max 4˚ nom 0.004 [0.10] 0.012 [0.30] 0.008 [ 0.20] 0.200 [5.08] ©2005 Bel Fuse Inc. 0.035 [0.88] Specifications subject to change without notice. 06.05 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 4