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
TM00118
T1-41
ELECTRICAL SPECIFICATIONS AT 25° C
SCHEMATIC
• Operates as a line-interface pulse transformer in
DS1 and CEPT applications
• Contains specific interwinding insulation to mini-
mize capacitance
• Winding (3-2)(2-1) is highly balanced
• Designed for automatic machine placement into
printed wiring boards
• Only difference between the 2745AF and 2745AF2
is the terminal length
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole T ransformers
2745AF
2745AF2
traP rebmuN
oitaRsnruT %2± ecnatcudnI
1
nimHm
RCDΩΩ
Ω
ΩΩxam
ecnatcudnIegakaeL
2
xamHµ
gnidniwretnI ecnaticapaC xamFp
muminIM gnidniwretnI nwodkaerB egatloV smrV
)6-4(:)1-3( )1-3( )1-3( )6-4( )1-3( )6-4(dna)1-3(
FA5472TC2:TC151.355.151.30.3320001
2FA5472TC2:TC151.355.151.30.3320001
V1.0,zHk91taderusaem.1 detrohs)6-4(htiw,zHk001taderusaem.2
3
2
CT
11 CT : 2 CT
4
CT5
6
• 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
esnopseRemiTdnaycneuqerFlacipyT
gnitanimreT secnadepmI htdiwdnaB )Bd3( emitesiR toohsrevO poorD )eslupsn053(
001 Ω004: ΩzHM12-zHk2sn71%0%5.0
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
TM00118
T1-42
MECHANICAL
HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole T ransformers
2745AF 2745AF2
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
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).
