10/100BASE-T LAN MAGNETICS Single Port Transformer Modules • Meets all relevant IEEE 802.3 requirements • Small form factor for board layout efficiency • Appropriate for use in cable modem applications • Operating temperature 0° to 70° C • Low profile, surface mount packaging rated to 225° C peak IR reflow temperature • Storage temperature -40° to +100° C • Minimum interwinding breakdown voltage of 1500 Vrms ELECTRICAL SPECIFICATIONS at 25° C Insertion Loss dB max Turns Ratio Part Number Common to Differential Mode Rejection dB min Return Loss dB min TX RX 100kHz to 100MHz 100kHz to 30MHz 30MHz to 60MHz 60MHz to 80MHz S558-5999-K8 1CT : 1CT 1CT : 1CT -1.0 -16 16 - 20log (f/30MHz) -10 -40 S558-5999-Y8 1CT : 1CT 1CT : 1CT -1.0 -16 16 - 20log (f/30MHz) -10 -38 Common to Common Mode Rejection dB min 100kHz to 100MHz Crosstalk dB min 1MHz 30MHz 60MHz 100MHz -30 -65 -55 -45 -35 -30 -60 -50 -40 -30 SCHEMATIC S558-5999-K8 Line Side TXCT 1 TX+ 2 TX 1CT : 1CT TX- 3 RX- 6 RX+ 7 RXCT 8 RX 1CT : 1CT S558-5999-Y8 Chip Side 16 TXCT Line Side RXCT 1 15 TX+ RX+ 2 14 TX- RX- 3 11 RX+ TX- 7 10 RX- TX+ 6 9 RXCT RX 1CT : 1CT Chip Side 16 RXCT 15 RX+ 14 RXTX 1CT : 1CT 11 TX+ 10 TX9 TXCT TXCT 8 ©2000 Bel Fuse Inc. Specifications subject to change without notice. 12.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 10/100BASE-T LAN MAGNETICS Single Port Transformer Modules MECHANICAL S558-5999-K8 S558-5999-Y8 0.500 [12.70] max 0.050 [1.27] 0.375 0.285 [9.52] [7.24] max max 0.425 [10.80] 0.018 ±0.002 [0.46 ±0.05] 0.050 [1.27] 0.025 [0.64] Suggested PCB Pad Layout 0.010 [0.25] max 0.225 [5.73] max 0.070 [1.78] 4˚ nom 0.004 [0.10] 0.012 [0.30] max 0.350 ±0.001 [8.89 ±0.25] 0.035 [0.88] Dimensions are in inches [millimeters]. Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted. ©2000 Bel Fuse Inc. Specifications subject to change without notice. 12.00 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 198 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