Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISDN MAGNETICS
2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
TM00208
T2-19
U
PO
Interface Transformers
SCHEMATIC
ELECTRICAL SPECIFICATIONS at 25 C
Primary
Secondary
10
CT
7
9
6
5
1
Operates as a pulse transformer at 384 Kbps in ISDN U
interface applications
Qualified per Bellcore TR-TSY-000357-1
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Primary winding can withstand 70mA of direct current
Minimum interwinding breakdown voltage of 1500 Vrms
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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 G7, Preston
Lancashire, PR1 8UD, U.K.
Tel
44-1772-556601
Fax 44-1772-888366
www.belfuse.com
ISDN MAGNETICS
2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
TM00208
T2-20
U
PO
Interface Transformers
MECHANICAL
0.59 [14.99] max
0.175
[4.45]
0.32 [8.13]
max
5
4
3
2
1
6
7
8
9
10
0.510
[12.95]
0.100 [2.54]
centers
0.450
[11.43]
Terminal 1
Identifier
0.61
[15.49]
max
0.110
[2.79]
0.023 [0.584] Sq typ
(Phosphor Bronze,
Solder-Coated)
0.56
[14.22]
max
+
+
+
+
+
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
2718BD2
2718BG2
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