HIGH FREQUENCY MAGNETICS
T1/E1 Surface Mount Shielded Tranformers
TM00140
•
Operate at the T1 rate of 1.544 Mb/s and the E1 rate of
2.048 Mb/s
Interwinding Electrostatic Shield provides low capaci-
tance and high EMI suppression
Minimum Interwinding Breakdown Voltage of 1500 Vrms
•
•
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
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•
•
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ELECTRICAL SPECIFICATIONS at 25° C
DCR
Ω
max
Turns Ratio
± 2%
Part Number
Pri : Sec
Primary
Inductance*
mH min
Leakage
Inductance
µ
H max
Pri
Interwinding
Capacitance
1
pF max
Sec
Non-Shielded
Version
2771D
1 : 1.14CT
1.3
1.5
0.53
0.62
5
2795B
2771E
1 : 2CT
3.15
3.2
1.0
3.4
5
2795H
* Measured at 10 kHz, 0.1 Vac
1. With shielded ground
SCHEMATICS
2771D
2771E
S
4
5
7
CT
6
1
2
Primary
Secondary
8
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
T1-89
BEL [ BEL FUSE INC. ]
