2662B Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNECTICS T1/E1 Single Through Hole Transformers

HIGH FREQUENCY MAGNECTICS
T1/E1 Single Through Hole Transformers
TM00154
• 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
ELECTRICAL SPECIFICATIONS AT 25° C
Part Number
Turns Ratio
±2%
(3-1) : (6-4)
Inductance
mH min ¹
(3-1)
DCR
Ω
max
(3-1) (6-4)
Leakage
Inductance
µH max²
(3-1)
Direct
Capacitance
pF
(3-1) and (6-4)
ET
constant
V-µs min
(3-1)
Minimum
Interwinding
Breakdown
Voltage
Vrms
2662B
1CT : 2 CT
3.5
2662B2
1CT : 2 CT
3.5
2662H
1 CT : 2 CT
3.5
2662H2
1 CT : 2 CT
3.5
1. measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
4.0
20.2
7.0
4.0
20.2
7.0
4.8
10.2
7.0
4.8
10.2
7.0
40 max
48
1000
40 max
48
1000
90 typ
48
1500
90 typ
48
1500
SCHEMATIC
2662B
2662B2
2662H
2662H2
3
6
CT 2
5 CT
1
4
1 CT : 2 CT
©2001 Bel Fuse Inc. Specifications subject to change without notice. 10.01
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T1-25