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Miniature Line Isolation Transformer
TR01335
Miniature Line Isolation Transformer
TR01110


Miniature Line Isolation Transformer - TR01335

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The TR01335 is a miniature high quality line isolation transformer, designed to meet the barrier requirements between Carriers Network lines and Subscribers equipment. The performance of the transformer is optimised for speech and data in the audio transmission band. The nominal matching impedance is 600 ohms and can also be used with complex impedances seen on most transmission lines.

The transformer has been designed to meet the safety requirements of British Telecom technical guide No.26 and BS6301 for subscriber’s apparatus and BS415 for general equipment. The transmission requirements of BS6305 and BS6328 are easily achieved with a good margin in most circuit configurations.

Construction of the transformer consists of a high permeability core in a double wound bobbin resin cast in a plastic case which can be fitted directly on to a printed circuit board, automatically giving a creepage distance between the isolated windings of 9mm.

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Electrical Specification @ 25° C

Specification

Units

TR01335

Primary resistance 1-4

ohms

40 to 55

Secondary resistance 2-3

ohms

40 to 55

Primary inductance 1-4

henry

0.8 Typ

Leakage inductance

mH

<4

Interwinding capacitance

pF

6 to 10

Return Loss 200 – 4000 Hz

dB

>22

Signal Range

dB

-45 to +5

Insertion loss

dB

0.7

Proof Voltage

Vrms

4000

Insulation resistance @ 500

Mohms

>100

KENTON RESEARCH LIMITED
Unit 19, Bourne Industrial Park, Crayford Kent DA1 4BZ
Tel: 01322 552000   Fax: 01322 552020
Miniature Line Isolation Transformer
TR01335
Miniature Line Isolation Transformer
TR01110
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