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| defining a degree of excellence 10BASE-T NETWORK COMPONENTS QUAD 4-PORT MODULES * Designed for use with National Semiconductor's DP83959 10Base-T PHY transceiver * Family of quad, 4-port designs utilizing common footprints and pinouts offering choice of common mode choke topologies 960072A * Low profile, surface mount packaging, rated to 225C peak IR reflow temperature * Cost and space efficient design solution * 2000 Vrms isolation ELECTRICALS AT 25C Part No. Insertion Loss (dB) Max 1-10MHz OCL (H) Min TX/RX Return Loss (dB) Min 5MHz-10MHz Crosstalk (dB) Min 1MHz-10MHz CM-CM Rej (dB) Min 10-30MHz 100MHz Schematic S553-5999-83 S553-5999-84 S553-5999-85 -1.0 -1.0 -1.0 50/200 50/200 50/200 -18 -18 -18 -40 -40 -40 N/A -40 -40 N/A -30 -30 A B C SCHEMATICS A B C 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 960072A 10BASE-T NETWORK COMPONENTS QUAD 4-PORT MODULES APPLICATION CIRCUIT APPLICATION NOTES * Bel has developed a variety of quad, 4-port part types for use with National Semiconductor's product line of quad, 4port PHY transceivers that incorporate digital filtering techniques within the silicon itself. Bel's "filterless magnetics" are optimized for this specific application and create a very cost efficient design solution. Each Bel part type contains transmit and receive transformers to provide for wave shaping, high voltage isolation and EMI noise suppression. * Bel has designed these parts as a family of parts with common footprint and pinouts to enable the designer to customize the use of common mode choke for optimum system performance. * In multi-port system applications, good PCB layout and proper grounding techniques are very critical to achieve FCC class A and B equipment approvals. Bel recommendations are available and can be provided by contacting our engineering department or your local sales representative. * 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. 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 |
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