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HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Shielded Transformer
TM00124
• Designed for DS1, DS1C, and CEPT applications
• Electrostatic shield provides improved longitudinal
signal suppression
• 2741J has an internal connection to terminal 8; do
not use
• 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
ELECTRICAL SPECIFICATIONS AT 25° C
Part Number
Turns Ratio
±2%
Pri : Sec
2741J
1 CT3 : 1.37
2741K
1:1
1. measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
3. connect 2 and 6
4. with pin 1 grounded
Primary
Inductance1
mH min
0.923
1.25
DCR
Ω
max
Pri Sec
0.83
0.7
1.25
0.85
www.DataSheet.co.kr
Leakage
Inductance2
µH max
Interwinding
Capacitance4
pF max
Minimum
Interwinding
Breakdown
Voltage
Vrms
2.03 8 850
2.0 3.5 500
SCHEMATIC
2741J
S
34
6
CT
2
75
1
PRIMARY SECONDARY
2741K
45
27
1
PRIMARY SECONDARY
©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
T1-53
Datasheet pdf - http://www.DataSheet4U.net/
TM00124
MECHANICAL
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Shielded Transformer
2741J
2741K
0.56 (14.22)
MAX
0.46 (11.68)
MAX
TERMINAL 1 IDENTIFIER
0.35 (8.89)
MAX
0.155
(3.94)
www.DataSheet.co.kr
0.100
(2.54)
0.023 (0.584) SQ TYP
(PHOSPHOR BRONZE,
SOLDER COATED)
0.250
(6.35)
1 2 34
8 76 5
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
CORPORATE
Bel Fuse Inc.
198 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
T1-54
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
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
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
Datasheet pdf - http://www.DataSheet4U.net/
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