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

HIGH FREQUENCY MAGNETICS
T1/E1 Surface Mount Transformers
TM00133
• Operate at the T1 rate of 1.544 Mb/s and the E1 rate
of 2.048 Mb/s
• Split windings provide maximum application
flexibilty
• 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
ELECTRICAL SPECIFICATIONS AT 25° C
Part Number
Turns Ratio
± 2%
Pri : Sec³
Primary
Inductance¹
mH min
2771B
1 : 1.14 CT
2771C
1 CT : 2 CT⁴
1. measured at 10 kHz, 0.1 Vac
2. measured at 100 kHz, 0.1 Vac
3. connect 6 to 7
4. connect 2 to 3
1.75
3.15⁴
Leakage
Inductance²
µH max
2
3
DCR
Ω
max
Pri
Sec³
0.8
0.8
1.10⁴
2.25
Interwinding
Capacitance
pF max
80
30
SCHEMATICS
4
1
2771B
5
7
CT
6
8
1 : 1.14 CT
2771C
4
5
2
7
3
6
1
8
1 CT : 2 CT
©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
T1-75