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Basic structure of resistance
Nov 17, 2017

Basic structure of resistance

Resistance is the regulating current,

Sharing the voltage to prevent the destruction of other electronic components

1, the substrate material generally uses 96% of the three oxidation of two aluminum ceramic

In addition to good electrical insulation, the substrate should also have excellent thermal conductivity at high temperatures

Electrical properties and mechanical strength, etc.

2. The resistance film is printed on the ceramic substrate with a resistivity paste with definite resistivity,

The paste is usually made up of two ruthenium oxide

3. The electrode is to ensure the good solderability and reliability of the resistor,

Generally, three layer electrode structure is used: inner, middle and outer electrode

4. The protective film covers the protective film on the resistance film, mainly to protect the resistor body

On the one hand, it plays a mechanical protective role, and on the other hand, it has insulation on the surface of the resistor body,

Avoid contact with adjacent conductors caused resistance fault. In the process of electroplating intermediate electrode,

Can also prevent the erosion of electroplating liquid on resistance film and lead resistance decreased.

Protective films are generally low melting point glass pastes.