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Simple Definitions

The most important electronics terms, demystified in one place.

Turn-on Voltage

Our Take

Turn-on voltage refers to the forward voltage of a semiconductor diode. It is the required voltage across the diode before it starts to conduct current in the forward direction. For silicon diodes, the turn-on voltage is approximately 0.7V, while for germanium diodes is approximately 0.3V.

Book Definition

The voltage required to bring the diode into significant conduction.

Microelectronic Circuit Design, 4th Edition by Richard C. Jaeger & Travis N. Blalock

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