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defining a degree of excellence  
10BASE-TNETWORKCOMPONENTS  
960051B  
• Designed for use with Level One 10Base-T chipset  
LXT901 LXT907, LXT914 or Texas Instruments Quad  
PHY (TNETE 2004)  
• Single port components, available with and without  
common mode chokes  
• Through-hole and surface mount packaging  
• Models with additional differential filtering available  
• 2000 Vrms isolation  
• 1:1 or 1:š2 turns ratio on transmit, 1:1 turns ratio on  
receive  
ELECTRICALS AT 25ºC  
Insertion Loss  
(dB) Max  
Return Loss  
(dB) Min  
Crosstalk  
(dB) Min  
Attenuation  
(dB) Min  
25 30 40  
CM-CM Rej  
(dB) Min  
10-30MHz 30-100MHz Schematic  
OCL  
Package  
Style  
Part No.  
1-10MHz  
(µH) Min  
1-10MHz  
1MHz-10MHz  
A553-0716-00  
A553-5999-64  
S553-0716-00  
S553-5999-08  
S556-5999-26  
S556-5999-53  
-1.0  
-1.0  
-1.0  
-1.0  
-1.0  
-1.0  
140  
200  
140  
110  
110  
110  
-18  
-18  
-18  
-15  
-15  
-15  
-40  
-40  
-40  
-40  
-40  
-40  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
-40  
-40  
-40  
N/A  
N/A  
N/A  
-30  
-30  
-30  
A
A
A
B
C
C
1
1
2
2
2
3
N/A  
-5 -10-16  
-5 -10-16  
SCHEMATICS  
A
B
C
MECHANICALS  
1
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-TNETWORKCOMPONENTS  
960051B  
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  
10BASE-TNETWORKCOMPONENTS  
960051B  
APPLICATION CIRCUIT  
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-TNETWORKCOMPONENTS  
960051B  
APPLICATION NOTES  
• All designs meet IEEE 802.3 standards.  
• Models with additional differential filtering are typically used in high density, multi-port applications or high noise content  
adapter cards.  
• 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  
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  
San Po Kong  
Kowloon, Hong Kong  
Tel: 852-2328-5515  
Fax: 852-2352-3706