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
2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
LM00403
L4-9
Quad Transformer Modules
ELECTRICAL SPECIFICATIONS AT 25 C
SCHEMATICS
Excellent EMI and common mode noise suppression
Meets all IEEE 802.3 standards including 350H with
8mA 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
S558-5999-N2
1 : 1
1CT : 1.41CT
1 : 1
1 : 1
1 : 1
1CT : 1.41CT
1CT : 1.41CT
1CT : 1.41CT
RD1+
1
RD1-
2
3
TCT1
TD1+
4
TD1-
5
RD2+
6
RD2-
7
TCT2
8
TD2+
9
TD2- 10
RD3+ 11
RD3- 12
TCT3 13
TD3+ 14
TD3- 15
RD4+ 16
RD4- 17
TCT4 18
TD4+ 19
TD4- 20
21 TX4-
22 TX4+
TCMT4
23
24 RX4-
25 RX4+
26 TX3-
27 TX3+
28 TCMT3
29 RX3-
30 RX3+
31 TX2-
32 TX2+
33 TCMT2
34 RX2-
35 RX2+
36 TX1-
37 TX1+
38 TCMT1
39 RX1-
40 RX1+
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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
2001Bel Fuse Inc. Specifications subject to change without notice. 09.01
LM00403
L4-10
Quad Transformer Modules
MECHANICAL
SCHEMATICS
S558-5999-N2
S558-5999-P8
S558-5999-P8
1 : 1
1.25CT : 1CT
1 : 1
RD1+
1
RD1-
2
3
TDCT1
TD1+
4
TD1-
5
RD2+
6
RD2-
7
TDCT2
8
TD2+
9
TD2-
10
RD3+
11
RD3-
12
TDCT3
13
TD3+
14
TD3-
15
RD0+
16
RD0-
17
TDCT0
18
TD0+
19
TD0-
20
21
TX0-
22
TX0+
TXCT0
23
24
RX0-
25
RX0+
26
TX3-
27
TX3+
28
TXCT3
29
RX3-
30
RX3+
31
TX2-
32
TX2+
33
TXCT2
34
RX2-
35
RX2+
36
TX1-
37
RX1+
38
TXCT1
39
RX1-
40
TX1+
1.25CT : 1CT
1.25CT : 1CT
1 : 1
1 : 1
1.25CT : 1CT
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]
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