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

• The Broadcom BCM 5208 is optimized for use in repeater and switch applications. The Bel parts listed on this data sheet

provide a very cost efficient interface, in addition to improving performance, reducing PCB layers and minimizing board

space. These Bel parts will require minimal or no trace crossovers which should reduce PCB layers and allow for straight

and short line traces from the transceiver and to the connectors.

• S558-5999-47 is a quad, 4-port device optimized to provide a straight line connection with stackable RJ-45 connectors.

• S558-5999-A3 and A5 are quad, 4-port devices optimized to provide a straight line connection with single in-line

connectors.

• S558-5999-A7 is a quad, 4-port device optimized to provide a straight line connection with reversed pinout stackable

RJ-45 connectors.

• S558-5999-A4 and A6 are dual, 2-port devices optimized for use with single in-line connectors and also includes an

impedance matched common mode termination.

• S558-5999-A8 and A9 are dual, 2-port devices optimized for use with single in-line connectors.

• 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.

960078B

HIGHSPEEDLANMAGNETICS

FOR BROADCOM TRANSCEIVER CHIPSETS