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S553-5999-40

Description
TOKENRINGNETWORKING COMPONENTS
File Size145KB,2 Pages
ManufacturerBel
Websitehttp://www.belfuse.com
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S553-5999-40 Overview

TOKENRINGNETWORKING COMPONENTS

S553-5999-40 Preview

defining a degree of excellence
TOKENRINGNETWORKING
COMPONENTS
• Designed for use with token ring transceivers developed
by Texas Instruments and Madge
• Complete single port device, including transmit and
receive channels in one package
• Integrated transformers and common mode chokes
• Compliant with IEEE 802.5 standards
960043A
• Robust surface mount packaging rated to meet 225ºC
peak IR reflow temperature
• For use in either 100 ohm UTP or 150 ohm STP media
systems
ELECTRICALS AT 25ºC (each channel)
Part No.
Turns
Ratio
Return Loss
(dB) Min
1-17MHz 17-25MHz
Insertion Loss
(dB) Max
4MHz 8MHz 16MHz 24MHz
Common to Common
Mode Rej (dB) Min
5MHz 20MHz 200MHz
Crosstalk
(dB) Min
8MHz 16MHz 24MHz
S553-5999-40
1CT:1CT
-16
-9
-0.5 -0.8
-1.1
-1.9
-35
-35
-20
-55
-50
-45
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
960043A
TOKENRINGNETWORKING
COMPONENTS
APPLICATION CIRCUIT
APPLICATION NOTES
• Bel has created this product for use with token ring 4/16 Mbps transceivers developed by Texas Instruments and
Madge. The impedance of this part has been optimized for use in either 100 ohm UTP or 150 ohm STP media
applications with only one RJ-45 connection. The Bel module provides isolation and impedance matching transformers
plus common mode choke for both transmit and receive channels. External filtering is required.
• Suppression of board induced noise can be achieved with precision layout instructions, along with careful consideration
of the selection and placement of discrete components for the interface circuit.
• 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.
• OCL (inductance) of each transformer is 616 µH minimum. Optional lower inductance models can be made available.
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
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