2745F Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformers

HIGH FREQUENCY MAGNETICS
T1/E1 Through Hole Hardened Transformers
TM00128
• Designed to operate at the DS1 rate of 1.544 Mbits/s
as a line interface transformer
• Only difference between 2745F and 2745F2 is the
terminal length
• Winding (3-1) can handle a 6 A surge current for 1
second
• Designed for remote powering with simplex-feed
current
• 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
Nominal
Turns Ratio
±2%
(3-1) : (6-4)
2745F
1CT : 2
2745F2
1CT : 2
1. measured at 10 kHz, 0.1 Vac
Inductance¹
mH Min
(3-1)
3.15
3.15
DCR
Ω
(3-1)
max min
0.65 0.42
0.65 0.42
(4-6)
max min
5.2
4.3
5.2
4.3
Leakage
Inductance
µH max
(3-1)
1.7
1.7
Minimum
Interwinding
Breakdown
Voltage
Vrms
850
850
SCHEMATIC
2745F
2745F2
3
6
CT 2
1
4
1 CT : 2
©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
T1-63