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| defining a degree of excellence TOKENRINGNETWORKING COMPONENTS * Designed for use with token ring transceivers developed by Texas Instruments and Madge * Dual, 2-port design integrates two channels of transmit and receive transformers plus common mode chokes * Cost efficient design for multi-port applications * Compliant with IEEE 802.5 standards 960045A * Robust surface mount packaging rated to meet 225C peak IR reflow temperature * For use in either 100 ohm UTP or 150 ohm STP media systems ELECTRICALS AT 25C Part No. Turns Ratio Return Loss (dB) Min 1-17MHz 17-25MHz Insertion Loss (dB) Max 4MHz 8MHz 16MHz 24MHz Common to Common Mode Rej (dB) Min 5MHz 20MHz 200MHz Crosstalk (dB) Min 8MHz 16MHz 24MHz S553-5999-42 1CT:1CT -16 -9 -0.5 -0.8 -1.1 -1.9 -35 -35 -20 -55 -50 -45 SCHEMATIC MECHANICAL Specifications subject to change without notice. Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 * Tel: 201-432-0463 * Fax: 201-432-9542 * E-Mail: BelFuse@belfuse.com Website: http://www.belfuse.com defining a degree of excellence 960045A TOKENRINGNETWORKING COMPONENTS APPLICATION CIRCUIT APPLICATION NOTES * Bel has created this product for use with token ring 4/16 Mbps chipsets developed by Texas Instruments and Madge. The impedance of this part has been optimized for use in either 100 ohm UTP or 150 ohm STP media applications with only one RJ-45 connection. The Bel module provides isolation and impedance matching transformers plus common mode choke for two sets of transmit and receive channels, and is ideal for multi-port applications. External filtering is required. * Suppression of board induced noise can be achieved with precision layout instructions, along with careful consideration of the selection and placement of discrete components for the interface circuit. * Bel's low profile, surface mount packaging is ideal for high speed pick and place machinery. Parts can be shipped on tape and reel for high speed placement. Construction processes have been implemented for thermal compatibility with high temperature IR reflow assembly processing. Post dipping of leads assist with PC board solderability. Each part is optically inspected to meet rigid coplanarity requirements. * OCL (inductance) of this transformer is 616 H minimum. Optional lower inductance models can be made available. Corporate Office Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302-4496 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: BelFuse@belfuse.com Internet: http://www.belfuse.com Far East Office Bel Fuse Ltd. 8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706 European Office Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K. Tel: 44-1772-556601 Fax: 44-1772-888366 |
Price & Availability of S553-5999-42
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