2745H2 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Shielded Transformers

HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Shielded Transformers
TM00125
• 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
• 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
ELECTRICAL SPECIFICATIONS AT 25° C
Part Number
Nominal
Turns Ratio
±2%
Inductance ¹
mH Min
(3-1) : (4-6)
2745H2
1 : 1.36 CT
2745AK2
1 : 1.14 CT
1. measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
3. with 2 grounded
(3-1)
1.24
1.25
DCR
Ω
max
(3-1)
1.58
0.87
(4-6)
0.50
0.78
Leakage
Inductance²
µH max
Typical
Effective
Distributed
Capacitance
pF
Interwinding
Capacitance
pF max
(3-1)
(3-1)
(3-1) to (4-6)³
3.3
50
10
2.0
-
5
Minimum
Interwinding
Breakdown
Voltage
Vrms
850
1000
SCHEMATIC
2745H2
2745AK2
3
4
5 CT
1
6
2
1:N
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T1-55