defining a degree of excellence
HIGH SPEED LAN MAGNETICS
960063A
• 100Base-TX, 10/100Base-TX, ATM155 or 100 Mbps
TP-FDDI applications
• Compatible with multiple transceivers
• Low profile, surface mount or through-hole packaging
available
• Available with or without impedance matched common
mode termination
• 2000 Vrms isolation
• 350µH OCL (inductance) @ 8mA bias
ELECTRICALS AT 25ºC
Part No.
Insertion Loss
(dB) Typ
1MHz-100MHz
Return Loss
(dB) Min
1MHz-30MHz
Return Loss
(dB) Min
30MHz-60MHz
Return Loss
(dB) Min
60MHz-80MHz
Crosstalk
(dB) Min
1MHz-100MHz
Common to Diff
Mode Rej (dB) Min
30MHz 100MHz
Common to Common
Mode Rej (dB) Min
30MHz 100MHz
Schematic
Package
Style
A558-5999-00
S558-5999-00
S558-5999-43
S558-5999-44
S558-5999-45
-1.0
-1.0
-1.0
-1.0
-1.0
-16
-16
-16
-16
-16
16-20log(f/30MHz)
16-20log(f/30MHz)
16-20log(f/30MHz)
16-20log(f/30MHz)
16-20log(f/30MHz)
-10
-10
-10
-10
-10
-30
-30
-30
-30
-30
-40
-40
-40
-40
-40
-30
-30
-30
-30
-30
-50
-50
-50
-50
-50
-40
-40
-40
-40
-40
A
A
B
B
A
1
2
3
4
3
SCHEMATICS
A
B
MECHANICALS
1
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
defining a degree of excellence
HIGH SPEED LAN MAGNETICS
960063A
MECHANICALS (CONT'D)
2
3
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
HIGH SPEED LAN MAGNETICS
960063A
MECHANICALS (CONT'D)
4
APPLICATION CIRCUITS
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
HIGH SPEED LAN MAGNETICS
960063A
APPLICATION CIRCUITS (CONT'D)
APPLICATION NOTES
• These Bel part types have been designed for use in 100 Mbps TP-FDDI, 100Base-TX, 10/100Base-TX and ATM 155
Mbps applications over Category 5 UTP or STP cable. Each part type provides high voltage isolation, wave shaping,
superior EMI and noise suppression and fast rise times. All parts meet IEEE 802.3, ANSI X3T9.5 and ATM Forum
Committee standards.
• Each Bel part type is designed with high voltage isolation transformers and common mode chokes. The S558-5999-
43 and -44 also contain an impedance matched common mode termination. For background information on the proper
implementation or complete elimination of this termination consult Bel's separate application note available on this
subject. All designs have been created to provide 350µH OCL (inductance) with 8mA DC bias applied. Consult the Bel
short form catalog and recommended application circuit for the specific configuration of each individual part type.
• 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
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