S558-5999-72 데이터 시트보기 (PDF) - Bel Fuse Inc.

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S558-5999-72

HIGH SPEED LAN MAGNETICS

Bel Fuse Inc. 

defining a degree of excellence

960017C

APPLICATION CIRCUIT

HIGH SPEED LAN MAGNETICS

APPLICATION NOTES

• Bel has designed these part types for use in either 100 Mbps or 10/100 Mbps multi-port applications with AMD's

79C872 PHY transceiver. These dual, 2-port and quad, 4-port devices provide high isolation transformers, wave

shaping, fast rise times, EMI and common mode noise suppression. All part types meet the IEEE 802.3 standards,

which includes a requirement for 350µH OCL (inductance) at 8mA DC bias applied.

• The S558-5999-72 includes impedance matching common mode termination on the transmit channel. Good circuit

balance on the board layout along with precise selection of the values and tolerances of the discrete external

components is critical for proper functionality of this termination. Refer to Bel's application note for proper implementation

of the impedance matched common mode termination and possible design considerations to eliminate its use.

• 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.

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

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