10/100BASE-T LAN MAGNETICS
Dual Transformer Modules
LM00405
•
•
•
Dual, two-port designs provide excellent EMI and
common mode noise suppression
•
•
•
Meets all IEEE 802.3 standards including 350µH
with 8mA bias
Optimized for board layouts utilizing single row and dual
stack RJ-45 connectors
Low profile, surface mount packaging rated to 225° C
peak IR reflow temperature
Operating temperature 0° to 70° C
Minimum interwinding breakdown voltage of 1500 Vrms
ELECTRICAL SPECIFICATIONS AT 25° C
Common to
Differential
Mode
Rejection
dB min
Common to
Common
Mode
Rejection
dB min
Insertion
Loss
dB max
Return Loss
dB min
Crosstalk
dB min
Part Number
60MHz
to
80MHz
100kHz to 100kHz to
30MHz to
60MHz
100kHz to 100MHz
1MHz 30MHz 60MHz 100MHz
100MHz
30MHz
S558-5999-65
S558-5999-75
S558-5999-79
S558-5999-83
S558-5999-A4
S558-5999-A6
S558-5999-A8
S558-5999-A9
-1.0
-20
-18
-18
-18
-18
-18
-18
-18
-18
-10
-10
-10
-10
-10
-10
-10
-10
-40
-40
-40
-40
-40
-40
-40
-40
-30
-30
-30
-30
-30
-30
-30
-30
-65
-65
-65
-65
-65
-65
-65
-65
-55
-55
-55
-55
-55
-55
-55
-55
-45
-45
-45
-45
-45
-45
-45
-45
-35
-35
-35
-35
-35
-35
-35
-35
-1.0
-20
-1.0
-20
-1.0
-20
-1.0
-20
-1.0
-20
-1.0
-20
-1.0
-20
Turns Ratio
Turns Ratio
Part Number
Part Number
TX
RX
TX
RX
S558-5999-65
S558-5999-75
S558-5999-79
S558-5999-83
2CT : 1 : 2CT
1CT : 1
1CT : 1CT
1CT : 1CT
1CT : 1CT
1CT : 1CT
S558-5999-A4
S558-5999-A6
S558-5999-A8
S558-5999-A9
1CT : 1
1CT : 1
1CT : 1CT
1CT : 1CT
1CT : 1CT
1CT : 1CT
1CT : 1
1CT : 1CT
1CT : 1CT
1.23CT : 1CT
©2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
L4-13