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.
S553-5999-46
1:2CT;1:2CT;1:2CT;1:2CT
350
0.25
12
0.3/1.0
B
1
S553-5999-49
1:2CT;1:2CT;1:2CT;1:2CT
350
0.25
12
0.3/1.0
C
1
S555-1204-00*
1:1;1:1;1:1;1:1
40 (primary)
N/A
N/A
N/A
D
2
S558-5999-C5
2CT:1;2CT:1;2CT:1;2CT:1
350
0.25
1.0
0.3/1.0
A
1
SCHEMATICS
960033A
Designed for use with either Seeq 80C240 or Cypress
Semiconductor CY7C971 100Base-T4 transceivers
Complies with IEEE 802.3 standards
Multiple design options, no CMC, integrated CMC or
separately packaged CMC
Low profile, surface mount packaging, rated to 225C
peak IR reflow temperature
2000 Vrms isolation
A
B
C
D
HIGH SPEED LAN MAGNETICS
*
common mode choke
ELECTRICALS AT 25C
Sec Inductance
Leakage
Coupling
Pri/Sec
Turns
(UTP side) OCL
Inductance
Capacitance
(ohms)
Package
Part No.
Ratio
(H) Min
L
L
(H) Max
C
WW
(pF) Max
Max
Schematic
Style
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.
960033A
MECHANICALS
HIGH SPEED LAN MAGNETICS
1
2
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.
APPLICATION CIRCUITS
960033A
HIGH SPEED LAN MAGNETICS
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
960033A
HIGH SPEED LAN MAGNETICS
APPLICATION NOTES
APPLICATION CIRCUITS (CONT'D)
These parts have been developed for use with multiple IC transceivers for 100Base-T4 category 3, 4, or 5 UTP cable
applications. There are multiple design options available for optimization of the specific application.
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.
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