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2745AJ

Description
HIGH FREQUENCY MAGNETICST1/E1 Through Hole Transformers
File Size64KB,2 Pages
ManufacturerBel
Websitehttp://www.belfuse.com
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2745AJ Overview

HIGH FREQUENCY MAGNETICST1/E1 Through Hole Transformers

HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Transformers
Operates as a line-interface pulse transformer in DS1
and CEPT applications
Desiged for automatic machine placement into
printed wiring boards
Only difference between the 2745AJ and 2745AJ2 is
the terminal length
Only difference between the 2745CA and 2745CA2
is the terminal length
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
TM00121
ELECTRICAL SPECIFICATIONS at 25° C
Turns Ratio
± 2%
Part Number
Pri : Sec
2745AJ
2745AJ2
2745CA
2745CA2
1 : 1.07 CT
1 : 1.07 CT
1 : 1.36 CT
1 : 1.36 CT
1.0
1.0
0.92
0.92
0.8
0.8
0.7
0.7
DCR
max
Pri
0.50
0.50
0.85
0.85
Sec
1.00
1.00
1.2
1.2
N/A
N/A
20
20
850
850
1000
1000
___
___
2741H2
2741H2
Interwinding
Breakdown
Voltage
Vrms min
Primary
Inductance*
mH min
Leakage
Inductance
µ
H max
Interwinding
Capacitance
pFmax
Shielded
Version
* Measured at 10 kHz, 0.1 Vac
SCHEMATICS
Lucent IC
Part Number
Receive
Application
Bel Part Number
T7288
T7289A
T7290A
T1 / CEPT 75 / CEPT 120
DS1
T7630
CEPT 75.1
CEPT 75.2 / CEPT 120
CEPT 75.1
T7688
CEPT 75.2 / CEPT 120
T7689
DS1
DS1
T7690
T7698
CEPT 75.1
CEPT 75.2 / CEPT 120
2745CA2
2745G3
2745G3
2745AJ2
2745CA2
2745CA2
2745G3
2745G3
2745AF2
2745G3
2745AJ2
2745CA2
2745AJ2
2745CA2
2745G3
2745AJ2
2745CA2
2745AJ2
CEPT 75 / CEPT 120
DS1
DS1
2745AF2
2745AF2
2745AF2
Bel Part Number
2745CA2
2745G3
Transmit
2745AJ
2745AJ2
3
4
5
2745AJ2
1
Primary
6
Secondary
2745CA
2745CA2
3
4
2
1
6
Secondary
2745AJ2
2745CA2
Primary
©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
T1-47

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2745AJ 2745CA
Description HIGH FREQUENCY MAGNETICST1/E1 Through Hole Transformers HIGH FREQUENCY MAGNETICST1/E1 Through Hole Transformers
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