HIGH FREQUENCY MAGNETICS
T1/E1 Miniature Surface Mount Tranformers
•
Meet pulse template and return loss requirements of
T1/E1 interface circuits
Minimum interwinding breakdown voltage of 1500
Vrms
Maximum inductance unbalance of center-tapped
windings is 0.2%
•
•
•
•
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
TM00142
•
•
ELECTRICAL SPECIFICATIONS at 25° C
Turns Ratio
± 1%
DCR
Ω
max
(4 - 6)
1.5
1.4
1.6
1.2
1.3
2.5
0.85
0.7
0.8
0.65
0.8
0.8
1.6
1.5
2.2
1.4
1.9
4.3
(3 - 1)
1.7
1.7
2.6
1.8
2.6
2.2
35
35
35
35
35
40
Part Number
Primary
Inductance
1
mH min
Leakage
Inductance
2
µ
H max
Interwinding
Capacitance
pF typ
Surge Voltage Capability
3
Pri : Sec
2795R
2795D
2795B
2795P
2795C
2795AB
1 : 1CT
1 : 1.08CT
1 :1.14CT
1 : 1.26CT
1 : 1.35CT
1CT: 2
Metallic
3000
3000
2500
3000
2500
2500
Longitudinal
2500
2500
2500
2500
2500
2500
1. Measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
3. See Supplementary Information
SCHEMATICS
2795B
2795C
2795D
2795P
2795R
2795AB
4
3
5
CT
2
3
CT 5
1
Primary
4
6
Secondary
6
Primary
1
Secondary
©2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-93
BEL [ BEL FUSE INC. ]
