HIGH FREQUENCY MAGNECTICS
T1/E1 Single Through Hole Transformers
•
Operate as line-interface pulse transformers in DS1
and CEPT applications
2662B and 2662B2 contain specific interwinding
insulation to minimize capacitance
Winding (3-2) (2-1) is highly balanced; Inductance
unbalance is 0.1%, max
Only difference between the 2662B and 2662B2 is
the terminal length; only difference between the
2662H and 2662H2 is the terminal length
•
•
•
•
Operating Temperature Range: -40° 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
Recommended transformer for new through-hole
applications is 2745AF2
TM00154
•
•
•
•
ELECTRICAL SPECIFICATIONS AT 25° C
Turns Ratio
±2%
Part Number
(3-1) : (6-4)
2662B
2662B2
2662H
2662H2
1CT : 2 CT
1CT : 2 CT
1 CT : 2 CT
1 CT : 2 CT
(3-1)
3.5
3.5
3.5
3.5
(3-1)
4.0
4.0
4.8
4.8
Inductance
mH min
1
DCR
Ω
max
(6-4)
20.2
20.2
10.2
10.2
Leakage
Inductance
µH max
2
(3-1)
7.0
7.0
7.0
7.0
Direct
Capacitance
pF
(3-1) and (6-4)
40 max
40 max
90 typ
90 typ
ET
constant
V-µs min
(3-1)
48
48
48
48
Minimum
Interwinding
Breakdown
Voltage
Vrms
1000
1000
1500
1500
1. measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
SCHEMATIC
2662B
2662B2
2662H
2662H2
3
6
CT 2
5 CT
1
1 CT : 2 CT
4
©2001 Bel Fuse Inc. Specifications subject to change without notice. 10.01
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-25
HIGH FREQUENCY MAGNECTICS
TM00154
T1/E1 Single Through Hole Transformers
MECHANICAL
2662B
2662H
2662B2
2662H2
0.36
(9.14)
max
0.51
(12.95)
max
0.36
(9.14)
max
0.51
(12.95)
max
0.45
(11.43)
max
0.155
(3.94)
0.45
(11.43)
max
0.015 (0.38) X 0.025 (0.63)
(Phosphor bronze,
solder coated)
4
3
5
2
6
1
0.150
(3.81)
typ
0.110
(2.97)
0.015 (0.38) X 0.025 (0.63)
(Phosphor bronze,
solder coated)
0.200
(5.08)
0.200
(5.08)
4
3
5
2
6
1
0.150
(3.81)
typ
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
©2001 Bel Fuse Inc. Specifications subject to change without notice. 10.01
CORPORATE
Bel Fuse Inc.
206 Van Vorst 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
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
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
T1-26
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