defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960048B
APPLICATION CIRCUIT
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 application
and create a very cost efficient design solution. Each Bel part type contains 2 channels of transmit and receive
transformers to provide for wave shaping, high voltage isolation and EMI noise suppression. In certain applications,
compliance with IEEE 802.3 standards may required additional differential filtering (Bel P/N S556-5841-19).
• Bel has designed these parts as a family of parts with common footprint and pinouts to enable the designer to
customize the use of additional differential filtering 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
BEL [ BEL FUSE INC. ]
