Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
TM00118
T1-41
ELECTRICAL SPECIFICATIONS AT 25 C
SCHEMATIC
Operates as a line-interface pulse transformer in
DS1 and CEPT applications
Contains specific interwinding insulation to mini-
mize capacitance
Winding (3-2)(2-1) is highly balanced
Designed for automatic machine placement into
printed wiring boards
Only difference between the 2745AF and 2745AF2
is the terminal length
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Transformers
2745AF
2745AF2
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Operating temperature range: -40C 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
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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
2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
TM00118
T1-42
MECHANICAL
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Transformers
2745AF
2745AF2
0.56 (14.22)
MAX
0.46 (11.68)
MAX
TERMINAL 1
IDENTIFIER
0.023 (0.584) SQ TYP
(PHOSPHOR BRONZE,
SOLDER COATED)
0.35 (8.89)
MAX
0.155 (3.94)
0.150
(3.81)
0.250
(6.35)
1
2
3
6
5
4
0.56 (14.22)
MAX
0.46 (11.68)
MAX
TERMINAL 1
IDENTIFIER
0.023 (0.584) SQ TYP
(PHOSPHOR BRONZE,
SOLDER COATED)
0.35 (8.89)
MAX
0.110 (2.79)
0.010 (0.25)
0.150
(3.81)
0.250
(6.35)
1
2
3
6
5
4
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
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