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
TM00125
T1-55
ELECTRICAL SPECIFICATIONS AT 25° C
SCHEMATIC
• Operate as line-interface pulse transformers in DS1
and CEPT applications
• Interwinding electrostatic shield for minimum
capacitance and maximum EMI suppression
• Operating temperature range: -40° C to +85° C
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Shielded Transformers
2745H2
2745AK2
• 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
3
126
5 CT
4
1 : N
rebmuNtraP
lanimoN oitaRsnruT %2±
ecnatcudnI
1
niMHm
RCDΩΩ
Ω
ΩΩxam
egakaeL ecnatcudnI
2
xamHµ
lacipyT evitceffE detubirtsiD ecnaticapaC Fp
gnidniwretnI ecnaticapaC xamFp
muminiM gnidniwretnI nwodkaerB egatloV smrV
)6-4(:)1-3( )1-3( )1-3( )6-4( )1-3( )1-3( )6-4(ot)1-3(
3
2H5472TC63.1:142.185.105.03.30501058
2KA5472TC41.1:152.178.087.00.2-5 0001
caV1.0,zHk01taderusaem.1 caV1.0,zHk001taderusaem.2 dednuorg2htiw.3
CORPORATE
Bel Fuse Inc.
198 V an V orst 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
K owloon, Hong K ong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Eur ope 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
TM00125
T1-56
MECHANICAL
2745H2
2745AK2
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Shielded Transformers
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)
123
654
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
