BEL S553-3873-19

defining a degree of excellence
10BASE-T NETWORK COMPONENTS
960013B
• Designed for use with multi-port 10Base-T transceivers
which incorporate digital filters in the silicon and require
1:1 Tx and Rx transformer ratios, such as the AMD IMR
series
• Low cost, dual, 2-port design solution
• Separate common mode chokes or integrated common
mode choke designs available
• Robust miniature SMT packaging, rated to 225ºC peak
IR reflow temperature
ELECTRICALS AT 25ºC
Part No.
S553-3873-19
Turns
Ratio
Insertion Loss
(dB) Max
1-10MHz
OCL
(Inductance)
µH Min
Return Loss
(dB) Min
5MHz-10MHz
Crosstalk
(dB) Min
5MHz-10MHz
Hipot
(Vrms)
Min
1:1
-1.0
100
-16
-45
2000
SCHEMATIC
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
960013B
APPLICATION CIRCUIT
APPLICATION NOTES
• Bel has designed this part primarily for use with AMD eIMR (79C984A), eIMR+ (79C985) and IMR2 (79C988) multi-port
PHY transceivers, which include digital filtering within the silicon. All parts contain high voltage isolation transformers
and meet the requirements of IEEE 802.3 standards. Common mode chokes are not inclusive to the design of these
parts and may not be necessary if good layout and proper grounding techniques are implemented. If information of
recommendations for PCB layouts is needed, please contact Bel engineering. Separately packaged common mode
chokes are available on data sheet 960046.
• 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.
• Please refer to the Bel short form catalog for all of the recommended mating semiconductors that can be used with this
part type.
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