laser component Unisontek 2
semiconductor metal parts Unisontek 4
semiconductor metal parts Unisontek

Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide, as well as organic semiconductors.

Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications.

They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum.