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 S553-5999-25 -1.0 100 -18 -40 -40 -30 a s553-5999-26 -1.0 100 -18 -40 -- -- b s553-5999-32 -1.0 100 -18 -40 -40 -30 c 960064a mechanical abc ? designed for use with amd's eimr (79c984a), eimr+ (79c985) and imr2 (79c983)/quiet (79c988) chipsets ? filterless quad, 4-port designs with common footprints and pinouts offering choice configurations for customized emi suppression ? best space and cost efficiency ? low profile, surface mount packaging, rated to 225oc peak ir reflow temperature ? 2000 vrms isolation 10base-t network components electricals at 25oc insertion loss return loss crosstalk cm-cm rej (db) max ocl (db) min (db) min (db) min part no. 1-10mhz (h) min 5mhz-10mhz 1mhz-10mhz 10-30mhz 100mhz schematic
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 application circuit ? bel has developed a variety of quad, 4-port part types for use with amd's product line of quad, 4-port 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. 960064a 10base-t network components
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