HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Transformers
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Designed to operate at the rate of 1.544 Mbits/s as a
line interface pulse transfomer
Only difference between the 2745C and 2745C2 is
the terminal length
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Operating temperature range: -40°C 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
TM00116
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ELECTRICAL SPECIFICATIONS AT 25° C
Nominal
Turns Ratio
± 2%
(3-1):(4-6)
2745C
2745C2
1 : 1.37 CT
1 : 1.37 CT
Inductance
1
µH Min
(3-1)
680
680
(3-1)
1.0
1.0
DCR
Ω
max
(4-6)
1.4
1.4
Leakage
Inductance
µH max
(3-1)
1.2
1.2
Interwinding
Capacitance
pF max
(3-1) to (4-6)
85
85
Minimum
Interwinding
Breakdown
Voltage
Vrms
850
850
Part Number
1. measured at 10 kHz, 0.1 Vac
SCHEMATIC
2745C
2745C2
3
4
5 CT
1
6
1 : 1.37 CT
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-37
BEL [ BEL FUSE INC. ]
