The P4340 prefix for determining the parameters of semiconductor devices.

Instruments for adjusting and controlling the PTA.The P4340 prefix for determining the parameters of semiconductor devices has been produced since 1978. It is designed to measure the parameters of bipolar pnp and npn transistors in a common emitter circuit, unipolar (field effect) transistors with p and n-channel in a common source circuit and other semiconductor devices with pn junctions when used as a reading device of any electrical measuring device, having limits of measurement of direct current and voltage.