Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
HIGH FREQUENCY MAGNETICS
1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99
TM9915
T128
T1/E1 Single Through Hole Shielded Transformer
SCHEMATIC
ELECTRICAL SPECIFICATIONS at 25 C
4
5
6
3
1
2
Primary
Secondary
S
Designed to operate at the DS1 rate of 1.544 Mbps
Shielded transformer reduces EMI
Qualified per Bellcore TR-TSY-000357-1
Compatible with water-soluble flux and total-immersion
cleaning
Meets IEC-695, 2-2 flammability requirements
Minimum interwinding breakdown voltage of 1000 Vrms
2745AK2
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CORPORATE
Bel Fuse Inc.
198 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 F23, Preston
Lancashire, PR1 8UD, U.K.
Tel
44-1772-556601
Fax 44-1772-888366
www.belfuse.com
1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99
TM9915
T129
HIGH FREQUENCY MAGNETICS
T1/E1 Single Through Hole Shielded Transformer
MECHANICAL
0.56 [14.22]
0.35 [8.89]
max
0.110 [2.79]
0.150 [3.81]
Centers
0.023 [0.584] Sq typ
(Phosphor bronze,
solder-coated)
0.250
[6.35]
0.46
[11.68]
max
Terminal 1 ID
6
5
4
3
2
1
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
2745AK2
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