defining a degree of excellence 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 specifications subject to change without notice. schematics s553-5999-18 -1.0 -20 -50 -50 -35 -25 -20 a s553-5999-23 -1.0 -20 -50 -50 -35 -25 -20 b S553-5999-24 -1.0 -20 -50 -50 -35 -25 -20 c s553-5999-39 -1.0 -20 -50 -50 -35 -25 -20 c 960049a a b 10base-t network components ? designed for use with amd multi-port 10base-t transceiver chipsets, such as the eimr (79c984a), eimr+ (79c985) and quiet (79c988)/imr2 (79c983) where digital filtering has been incorporated into the silicon ? filterless quad, 4-port designs with common configuration offering choice of customized emi performance and grounding techniques ? quad design offers best space and cost efficiency per port ? low profile, surface mount packaging, rated to 225oc peak ir reflow temperature ? 2000 vrms isolation electricals at 25oc insertion loss return loss crosstalk cm-cm rej (db) max (db) min (db) min (db) min part no. 1-10mhz 5mhz-10mhz 5mhz-10mhz 5-10mhz 50mhz 100mhz 200mhz schematic
defining a degree of excellence 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 specifications subject to change without notice. 960049a mechanical 10base-t network components c schematics (cont'd)
defining a degree of excellence 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 specifications subject to change without notice. application circuit 960049a 10base-t network components
defining a degree of excellence 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 application notes ? bel has developed these part types for use with amd's product line of quad, 4-port phy devices that incorporate digital filtering techniques within the silicon itself. bel's "filterless magnetics" are optimized for this specific applicatio n and create a very cost efficient design solution. each bel part type contains 4 channels of transmit and receive transformers to provide for wave shaping, high voltage isolation and emi noise suppression. in certain applications, additional differential filtering may be required to comply with ieee 802.3 standards. ? 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. ? the specific configuration of these bel parts (rx-tx-tx-rx-rx-tx-tx-rx) is optimal for use with stacked or "double decker" rj-45 connectors. this configuration should provide short and straight traces to the output connectors. 960049a 10base-t network components
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