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

HIGH FREQUENCY MAGNETICS
T1/E1 Surface Mount Transformer
TM01102
• Operates as a pulse transformer at the T1 rate of
1.544 Mb/s and the E1 rate of 2.048 Mb/s
• Provides voltage transformation and impedance
matching for line-interface applications
• All windings are hardened to handle a 6A surge for 1
second
• Recommended drop-in replacement for non-
hardened applications is 2779C
• 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%
Inductance ²
mH min
(4-1) : (5-8)¹
(4-1)
Leakage
Inductance ³
µH max
(4-1)
2771G
1 : 1.37CT
0.7
1.2 ³
1. With 6 and 7 connected.
2. 10 kHz, 0.1 Vac
3. 100 kHz, 0.1 Vac
DCR
Ω
max
(4-1)
(5-8) ¹
0.35
0.45
Interwinding
Capacitance
pF typ
(4-1) : (5-8) ¹
45
Minimum
Interwinding
Breakdown Voltage
Vrms
850
SCHEMATIC
2771G
4
5
7
CT
6
1
8
1 : 1.37CT
©2001 Bel Fuse Inc. Specifications subject to change without notice. 02.01
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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