Datasheet > TEW4897

TEW4897

更新时间： 2025-09-05 03:28:15

品牌	Logo	应用领域
FILTRAN		变压器综合业务数字网
页数	文件大小	规格书
1页	30K
描述
ISDN U-BUS Input/Output Transformer

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数据手册

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TEW4897 数据手册

ISDN

U-BUS Input/Output Transformer

TEW4897

TEW4897 is designed to inter-

face with the subscribers prem-

Applications:

ises (NT) and the 2- wire line

side of the Central Office Equip-

ment (LT) in the ISDN Network.

•

Low profile construction.

Up to 50 mA line current.

High insulation between line

and equipment side.

TEW4897 meets the electrical re-

quirements for the SIEMENS

PEB20902/IEC (4B3T) device.

Exceeds the requirements of:

EN60950 and EN41003.

MECHANICAL

DEVICE

LINE

DOT AT

PIN #1

DIMENSIONS, Inches (mm)

P/N

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

150 Ω

(6-7)

> 3.7 mH

< 12.5 µH

Leakage Inductance

Distributed Capacitance

Winding Resistance

(1-4)

(6-7)

< 110 pF

< 2.5 Ω

< 1.74 Ω

1 : 1.32

Turns Ratio

(6-7) : (1-4)

1 - 4 KHz

Longitudinal Balance

> 60 dB

> 55 dB

50 mA

4 - 160 KHz

DC Capability (Line Side)

Dielectric Strength

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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