Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
10/100BASE-T LAN MAGNETICS
2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02
LM00413
Transformer Modules for Auto MDIX
ELECTRICAL SPECIFICATIONS AT 25 C
Designed for use in symmetrical Auto MDIX TX and RX
channels
Quad, four-port S558-5999-Q9 design optimizes board
layout for single row and dual stack RJ-45 connectors
Tested for use with multiple 10/100 Mbps and 100 Mbps
PHY transceivers requiring 1CT : 1CT TX and RX
transformers
Meets all IEEE 802.3 standards including 350H with
8mA DC bias
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
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SCHEMATICS
S558-5999-W2
(Single Port Design)
S558-5999-Q9
1CT : 1CT
1
2
3
1CT : 1CT
1CT : 1CT
1CT : 1CT
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1CT : 1CT
1CT : 1CT
1CT : 1CT
Chip Side
Line Side
1CT : 1CT
2
1
6
7
10
16
9
11
14
8
15
1CT : 1CT
3
Chip Side
Line Side
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel
201-432-0463
Fax
201-432-9542
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel
852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel
44-1772-556601
Fax 44-1772-888366
www.belfuse.com
10/100BASE-T LAN MAGNETICS
2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02
LM00413
Transformer Modules for Auto MDIX
MECHANICALS
S558-5999-Q9
0.480
[12.19]
0.070
[1.78]
ref
1.100
[27.94]
max
0.050 [1.27]
0.950
[24.13]
0.212
[5.38]
ref
0.225
[5.72]
max
0.035
[0.89]
0.005
[0.13]
min
0- 5
0.020 0.002
[0.51 0.05]
R 0.005
[0.13]
R 0.015
[0.39]
0.070
[1.78]
0.050 [1.27]
0.030 [0.77]
0.645
[16.38]
Suggested PCB Pad Layout
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
0.600
[15.24]
0.004 [0.10]
S558-5999-W2
0.500
[12.70]
max
0.375
[9.53]
max
0.285
[7.24]
max
0.018 0.002
[0.46 0.05]
0.225
[5.72]
max
0.050
[1.27]
0.015
[0.38]
0.350 0.010
[8.89 0.25]
0.008 - 0.012
[0.20 - 0.30]
0.035
[0.89]
4 nom
0.025
[0.64]
0.070
[1.78]
0.050
[1.27]
0.425
[10.80]
Suggested PCB Pad Layout
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
0.004 [0.10]
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