BEL S553-5999-35

defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960065A
• 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 of configurations for
customized EMI suppression
• Best per port space and cost efficiency
• Low profile, surface mount packaging, rated to 225ºC
peak IR reflow temperature
• 2000 Vrms isolation
ELECTRICALS AT 25ºC
Part No.
S553-5999-35
S553-5999-76
S553-5999-77
Insertion Loss
(dB) Max
1-10MHz
Return Loss
(dB) Min
5MHz-10MHz
Crosstalk
(dB) Min
1MHz-10MHz
-1.0
-1.0
-1.0
-18
-18
-18
-40
-40
-40
CM-CM Rej
(dB) Min
10-30MHz 100MHz
-40
-40
N/A
-30
-30
N/A
Schematic
A
B
C
SCHEMATICS
A
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
B
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
defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960065A
SCHEMATICS (CONT'D)
C
MECHANICAL
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
defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960065A
APPLICATION CIRCUIT
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
defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960065A
APPLICATION NOTES
• Bel has developed a variety of quad, 4-port part types for use with AMD 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 4 channels of 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.
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