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
TM00128
T1-63
ELECTRICAL SPECIFICATIONS AT 25° C
SCHEMATIC
• Designed to operate at the DS1 rate of 1.544 Mbits/s
as a line interface transformer
• Only difference between 2745F and 2745F2 is the
terminal length
• Winding (3-1) can handle a 6 A surge current for 1
second
• Designed for remote powering with simplex-feed
current
HIGH FREQUENCY MA GNETICS
T1/E1 Through Hole Hardened Transformers
2745F
2745F2
3
1
2
6
4
1 CT : 2
CT
rebmuNtraP
lanimoN oitaRsnruT %2±
ecnatcudnI
1
niMHm
RCDΩΩ
Ω
ΩΩ egakaeL ecnatcudnI xamHµ
muminiM gnidniwretnI nwodkaerB egatloV smrV
)1-3( )6-4(
)4-6(:)1-3( )1-3( xam nim xam nim )1-3(
F54722:TC151.356.024.02.53.47.1058
2F54722:TC151.356.024.02.53.47.1058
caV1.0,zHk01taderusaem.1
• 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
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 F23, 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
TM00128
T1-64
MECHANICAL
2745F
HIGH FREQUENCY MA GNETICS
T1/E1 Through Hole Hardened 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
0.155 (3.94)
0.150
(3.81)
0.250
(6.35)
123
654
2745F2
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).
