S554-6500-27 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS DS3/E3/STS-1 Dodecal Transformer Module

HIGH FREQUENCY MAGNETICS
DS3/E3/STS-1 Dodecal Transformer Module
TM02134
• Optimized for line transceivers operating at E3, DS3
or STS-1 rates: 34.368 Mb/s, 44.736 Mb/s, 51.84 Mb/s
• Twelve line interface transformers in a single surface
mount package
• Meets ITU-T G.703 return loss from -40° to +85° C
from 860 kHz to 51.55 MHz
• UL 1950 approved: file number E150991
ELECTRICAL SPECIFICATIONS at 25° C
• Operating temperature range -40° to +85°C
• Meets IEC 695, 2-2 flammability requirements
• PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
• Reliability testing: Shock, vibration, temperature cycling,
temperature - humidity - bias
• Interwinding breakdown voltage: 1500 Vrms min
Part Number
Turns Ratio
±2%
IC : Line
Primary Inductance
at 100 kHz
25° C
µH min
-40° C
µH min
Leakage
Inductance
at 1 MHz
Capacitance
C w/w
µH max
pF max
Return Loss at 1.72 MHz
75Ω Application¹
25° C
dB typ
-40 to +85° C
dB min
TX
RX
TX
RX
TX
RX
TX
RX
TX & RX
TX
RX
TX
RX
S554-6500-27 1 : 1
1:1
80
80
40
40 0.10 0.10
10
25
25
18
18
1. Terminated in 75 Ω on IC side
SCHEMATIC
S554-6500-27
The module is symmetrical and
either side can be connected
to the IC or to the line.
All transformers will support
either TX or RX operation.
IC Side
1
2
3
4
5
6
7
8
9
1:1
1:1
1:1
1:1
1:1
Line Side
48
47
46
45
44
43
42
41
40
10
39
1:1
11
38
12
37
1:1
13
36
14
35
1:1
15
34
16
33
17
1:1
32
18
31
1:1
19
30
20
29
1:1
21
28
22
27
1:1
23
26
24
25
©2002 Bel Fuse Inc. Specifications subject to change without notice. 05.02
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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