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 10BASE-T LAN MAGNETICS
Quad Transformer Modules
LM00501
* *
Transformer turns ratio RX 1 : 1 and TX 1CT : 1.41CT Filterless quad, four-port designs with common footprint and pinouts Optimized for use with stackable RJ-45 connectors
*
Low profile, surface mount packaging rated to 225 C peak IR reflow temperature Quad design offers best space, performance and cost efficiency Operating temperature 0 to 70 C Minimum interwinding breakdown voltage of 1500 Vrms
*
* *
* Designs utilize standard 40 pin SMD packaging *
ELECTRICAL SPECIFICATIONS AT 25 C
Common to Common Mode Rejection dB min
Part Number
OCL Inductance H min
Insertion Loss dB max
Return Loss dB min
Crosstalk dB min
1MHz to 10MHz
1MHz to 10MHz
10MHz to 30MHz
100MHz
1MHz to 10MHz
Transformers Only
S553-2940-02
100
-1.0
-18
---
---
-40
S553-5999-54
100
-1.0
-18
---
---
-40
Transformers and Common Mode Chokes
S553-2940-01
100
-1.0
-18
-40
-30
-40
S553-2940-03
100
-1.0
-18
-40
-30
-40
S553-2940-04
100
-1.0
-18
-40
-30
-40
S553-2940-08
100
-1.0
-18
-40
-30
-40
S553-2940-09
100
-1.0
-18
-40
-30
-40
S553-5999-38
100
-1.0
-18
-40
-30
-40
(c)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 L5-5
10BASE-T LAN MAGNETICS
LM00501
Quad Transformer Modules
S553-2940-02
1 1:1 40 39 1CT : 1.41CT 38 37 36 1CT : 1.41CT 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
SCHEMATICS
S553-5999-54
1 RX1 2 3 TX1 4 5 RX2 6 7
8 9 RX2 10 11 RX3 12 13 TX3 14 15 16 17 TX4 18 19 RX4 20 1:1 1CT : 1.41CT 1:1 1:1
1:1
40 39
RX1 2 3 TX1 4 5 6 7 TX2
1CT : 1.41CT
38 37 36 35 34
1:1
8 TX2 9 10 11 RX3 12 13 TX3 14 15 16 RX4 17 18 TX4 19 20
1CT : 1.41CT
33 32 31 30 29
1:1
1CT : 1.41CT
28 27 26 25 24
1:1
1CT : 1.41CT
1CT : 1.41CT
23 22 21
S553-2940-01
RX1 1 2 3 TX1 4 5 6 7 8 9 RX2 10 RX3 11 12 13 TX3 14 15 16 17 TX4 18 19 RX4 20 21
RX4
(c)2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
S553-2940-03
40
RX1 1 2 3 TX1 4 5 6 7 TX2 8 9 1:1
1CT : 1.41CT
1:1
1:1
40 39
1CT : 1.41CT
39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
TX4 RX3 RX2
1CT : 1.41CT
38 37 36 35 34 33 32 31
1CT : 1.41CT
TX2
1:1
1:1
10 11 12 13 TX3 14 15 16 17 18 19 20 1:1
1CT : 1.41CT
1:1
30 29
1CT : 1.41CT
1CT : 1.41CT
28 27 26 25 24 23 22 21
1CT : 1.41CT
1:1
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com L5-6
10BASE-T LAN MAGNETICS
Quad Transformer Modules
SCHEMATICS
S553-2940-04
1 RX1 2 3 4 5 6 7 8 9 10 11 RX3 12 13 14 15 16 17 18 19 20 1CT : 1.41CT 1CT : 1.41CT 29 28 27 26 1CT : 1.41CT 1CT : 1.41CT 39 38 37 36 35 34 33 32 31 30 1:1 40
LM00501
S553-2940-08
1 RX1 2 3 4 5 6 RX2 7 TX2 8 9 10 11 RX3 12 13 TX3 14 15 16 RX4
25 24 23 22 21
1:1
40 39
1CT : 1.41CT
TX1
TX1
38 37 36 35 34
1:1
TX2
1:1
1CT : 1.41CT
RX2 1:1
33 32 31 30 29
1:1
1CT : 1.41CT
TX3
28 27 26 25 24
1:1
17 18 TX4 19 20 1CT : 1.41CT
TX4
1:1
23 22 21
RX4
S553-2940-09
1 RX1 2 3 4 5 6 1CT : 1.41CT 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1:1 40
1 TX1 2 3 4 RX1 5 6 TX2 7 8 9 RX2 10 11 TX3 12 13 14 RX3 15 16 TX4 17 18 19 RX4 20
S553-5999-38
1CT : 1.41CT 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
(c)2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
1:1
TX1
1:1
1CT : 1.41CT
RX2 7 8 TX2 9 10 11 RX3 12 13 TX3 14 15 16 RX4 17 18 TX4 19 20 1CT : 1.41CT
1:1
1:1
1CT : 1.41CT
1CT : 1.41CT
1:1
1:1
1CT : 1.41CT
1CT : 1.41CT
1:1
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com L5-7
10BASE-T LAN MAGNETICS
LM00501
Quad Transformer Modules
MECHANICAL
S553-2940-01 S553-2940-02 S553-2940-03 S553-2940-04 S553-2940-08 S553-2940-09 S553-5999-38 S553-5999-54
0.070 [1.78] ref
1.100 [27.94] max
0.050 [1.27]
0.480 [12.19]
0.645 [16.38]
0.070 [1.78] R 0.015 [0.39] R 0.005 [0.13]
0.004 [0.10]
0.050 [1.27]
0.020 0.002 [0.51 0.05] 0.225 [5.72] max
0.030 [0.77] Suggested PCB Pad Layout
0.212 [5.38] ref 0.950 [24.13]
0.035 [0.89]
0.600 [15.24]
0.005 [0.13] min
0- 5
Dimensions are in inches [millimeters]. Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
(c)2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
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
L5-8


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