S553-6500-F4 Datasheet, PDF (1/4 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS HIGH FREQUENCY MAGNETICS

HIGH FREQUENCY MAGNETICS
T1/E1 Dual Hybrid Transformer Module
TM01125
• Optimized for T1/E1 signal splitting with either balanced • Operating temperature range -40° to +85°C
pair 100Ω or 120Ω lines, or unbalanced 75Ω cable
• Meets IEC 695, 2-2 flammability requirements
• Two balanced, equal-ratio 3dB hybrid transformers in
one surface mount package
• PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
• Excellent signal isolation at split ports B and C
• Reliability testing: Shock, vibration, temperature cycling,
• Meets ITU-T G.703 return loss from -40° to +85° C
temperature - humidity - bias
• UL 1950 approved: file number E150991
• Interwinding breakdown voltage: 1500 Vrms min
ELECTRICAL SPECIFICATIONS at 25° C
Part Number
Impedance Ratio
Ω
Port A : Port B + Port C
S553-6500-F4
ASIG : BSIG + CSIG
100 : 100 + 100 or
120 : 120 + 120 or
75 : 75 + 75
Insertion Loss
dB typ
500 kHz to 5 MHz
ASIG to BSIG
ASIG to CSIG
3.2
Transhybrid Loss
dB typ
500 kHz to 5 MHz
BSIG to CSIG
55
Return Loss
dB typ
100 kHz to 5 MHz
ASIG
30
PIN DIAGRAM AND EXTERNAL CONNECTIONS
Notes
1) External resistors R1 and R2 terminate the
unused fourth port (DSIG) for each hybrid.
2) External connections at COM 1 through
COM 8 terminals complete required
internal interconnections.
3) Resistors R1 and R2 should be set equal
to the line impedance.
1 ASIG+
1 ASIG-
R1
2 ASIG+
2 ASIG-
R2
S553-6500-F4
1 ASIG+
2 ASIG-
3
4
5 DSIG+
6 DSIG-
7
8
9 ASIG+
10 ASIG-
11
12
13 DSIG+
14 DSIG-
15
16
BSIG+ 32
BSIG- 31
COM 1 30
COM 2 29
CSIG+ 28
CSIG- 27
COM 3 26
COM 4 25
BSIG+ 24
BSIG- 23
COM 5 22
COM 6 21
CSIG+ 20
CSIG- 19
COM 7 18
COM 8 17
1 BSIG+
1 BSIG-
1 CSIG+
1 CSIG-
2 BSIG+
2 BSIG-
2 CSIG+
2 CSIG-
©2001 Bel Fuse Inc. Specifications subject to change without notice. 12.01
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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