2771D Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS T1/E1 Surface Mount Shielded Tranformers

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 • Operating temperature range: -40° C to +85° C
2.048 Mb/s
• Meets IEC 695, 2-2 flammability requirements
• Interwinding Electrostatic Shield provides low capaci-
tance and high EMI suppression
• PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
• Minimum Interwinding Breakdown Voltage of 1500 Vrms
• Reliability testing: Shock, vibration, temperature cycling,
temperature - humidity - bias
ELECTRICAL SPECIFICATIONS at 25° C
Part Number
Turns Ratio
± 2%
Pri : Sec
Primary
Inductance*
mH min
2771D
1 : 1.14CT
1.3
2771E
1 : 2CT
3.15
* Measured at 10 kHz, 0.1 Vac
1. With shielded ground
Leakage
Inductance
µH max
1.5
3.2
DCR
Ω
max
Pri
Sec
0.53
0.62
1.0
3.4
Interwinding
Capacitance¹
pF max
Non-Shielded
Version
5
2795B
5
2795H
SCHEMATICS
2771D
2771E
S
4
5
7
CT
6
1
8
2
Primary
Secondary
©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
T1-89