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semiconductor diode

electronics
Also known as: diode, junction diode, p-n junction diode

Quick Summary

A semiconductor diode is an electronic component that permits electric current to flow in only one direction. Most diodes utilize a p-n junction, where a p-type material (with positive charge carriers called holes) meets an n-type material (with negative charge carriers called electrons).1

When a positive voltage is applied to the p-side (forward bias), current flows easily. However, when a negative voltage is applied to the p-side (reverse bias), the diode acts as an insulator, blocking current until a high breakdown voltage is reached. Diodes are crucial for rectification, converting alternating current (AC) to direct current (DC). Different types of diodes exist, including light-emitting diodes (LEDs) and Zener diodes, each with specialized applications.12

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