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Filtran - ISDN U-BUS Input/Output Transformer

Numéro de référence TEW4897
Description ISDN U-BUS Input/Output Transformer
Fabricant Filtran 
Logo Filtran 





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TEW4897 fiche technique
ISDN
www.DataSheet4U.com
U-BUS Input/Output Transformer
TEW4897 is designed to inter-
face with the subscribers prem-
ises (NT) and the 2- wire line
side of the Central Office Equip-
ment (LT) in the ISDN Network.
TEW4897 meets the electrical re-
quirements for the SIEMENS
PEB20902/IEC (4B3T) device.
Exceeds the requirements of:
EN60950 and EN41003.
Applications:
Low profile construction.
Up to 50 mA line current.
High insulation between line
and equipment side.
TEW4897
MECHANICAL
DOT AT
PIN #1
DEVICE
6
7
1
2
LINE
3
4
DIMENSIONS, Inches (mm)
P/N L W H A B C
S
TEW4897 0.87 0.83 0.63 0.60 0.20 0.12 0.025
(22.0) (21.0) (16.0)(15.3) (5.1) (3.0) (0.64)
ELECTRICAL
Line Impedance
Inductance
Leakage Inductance
Distributed Capacitance
Winding Resistance
Turns Ratio
Longitudinal Balance
DC Capability (Line Side)
Dielectric Strength
(6-7)
(6-7)
(1-4)
(1-4)
(6-7)
(6-7) : (1-4)
1 - 4 KHz
4 - 160 KHz
150
> 3.7 mH
< 12.5 µH
< 110 pF
< 2.5
< 1.74
1 : 1.32
> 60 dB
> 55 dB
50 mA
4000 V rms
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3
Tel : (613) 226-1626 Fax : (613) 226-7124
4-12

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