defining a degree of excellence
defining a degree of excellence
defining a degree of excellence
defining a degree of excellence
defining a degree of excellence
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
Specifications subject to change without notice.
SCHEMATIC
S556-5999-29
-1.0
-7.0
-18
-28
-15
-35
-40
-30
-5.0
-11
-16
960057A
MECHANICAL
Designed for use with LSI Logic L64381 10Base-T PHY
transceiver
Integrated resistor network for impedance matching
Low profile, surface mount package, rated for 225C
peak IR reflow temperature
2000 Vrms isolation
10BASE-T NETWORK COMPONENTS
TX
RX
ELECTRICALS AT 25C
Insertion Loss
Attenuation
Return Loss
Crosstalk
CM-CM Rej
(dB) Max
(dB) Min
(dB) Min
(dB) Min
(dB) Min
Part No.
1-10MHz
20MHz 25MHz 30MHz
5MHz-10MHz
1MHz-10MHz
10-30MHz 30-100MHz
defining a degree of excellence
defining a degree of excellence
defining a degree of excellence
defining a degree of excellence
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
Bel's surface mount 10Base-T network component filter modules provide a complete solution for the interface
module between the IC transceiver chip and the media side connector. Designed within each module are transmit and
receive filter networks, high voltage isolation transformers and high performance EMI suppression common mode
chokes. Each module fully meets the IEEE 802.3 standards for 10 Mbps data rates over 100 meters of media cable.
This Bel part type has been designed to provide signal performance optimization, maximum noise reduction and
minimum crosstalk interference. Careful board layout and grounding techniques are also critical to control jitter and
signal reflections.
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.
960057A
10BASE-T NETWORK COMPONENTS
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