HIGH FREQUENCY MAGNETICS
T1/E1 Miniature OctalTransformer Module
TM01112
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Optimized for PMC Sierra PM4354 Quad COMET
Eight transformers in one surface-mount package
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Operating temperature range -40° to +85°C
Meets IEC 695, 2-2 flammability requirements
Miniature octal 32-pin platform provides 33% area
reduction compared to standard octal package
PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
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Electrically identical to S553-6500-A7
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Reliability testing: Shock, vibration, temperature cycling,
temperature - humidity - bias
Meets ITU-T G.703 return loss from -40° to +85° C
UL 1950 approved: file number E150991
Interwinding breakdown voltage: 1500 Vrms min
ELECTRICAL SPECIFICATIONS at 25° C
Primary
Turns Ratio
Leakage
Inductance
at 1 MHz
DCR
Ω
max
Capacitance
pF max
Return Loss at 102 kHz
Inductance
±2%
120Ω Application1
at 10 kHz
Part Number
25° C
dB typ
-40 to +85° C
dB min
IC : Line
TX RX
1 : 2.42 1 : 2.42
µH min
µH max
IC Side
Line Side
Winding
to
Winding
TX
950
RX
TX
RX
TX
0.6
RX
TX
1.3
RX
TX
18
RX
TX
RX
S553-6500-C6
950
0.3
0.3
0.6
1.3
35
27
17
24
1. Terminated in 25.4 Ω for TX and 18.2 Ω for RX
SCHEMATIC
S553-6500-C6
Line Side
IC Side
1 : 2.42
1 TXI+
1
1 TXO+
32
31
30
1 TXI-
2
1 TXO-
1 RXI+
1 : 2.42
1 : 2.42
1 : 2.42
1 : 2.42
1 RXO+
3
1 RXO-
2 TXI+
4
29 1 RXI-
5
2 TXO+
28
2 TXI-
6
27
26
2 TXO-
2 RXI+
2 RXO+
7
2 RXI-
25
8
2 RXO-
3 TXI+
3 TXO+
24
9
10
3 TXO-
3 RXI+
3 TXI-
23
1 : 2.42
1 : 2.42
1 : 2.42
22
3 RXO+ 11
21 3 RXI-
12
13
3 RXO-
4 TXI+
4 TXO+
20
14
19 4 TXO-
4 TXI-
4 RXI+
18
4 RXO+ 15
4 RXO- 16
17
4 RXI-
©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
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