Diodes Explained: Types & Sourcing Guide

Diodes are the simplest semiconductor switch. This guide covers diode types and procurement.

By Vigny (深圳市华芯购电子有限公司) · Published 2026-09-27 · Data verified 2026-09-29 · Sources: manufacturer datasheets & HuaXinGou stock verification

Diode Types

Rectifier (1N4007), fast recovery (FR107), Schottky (SS34, BAT54), Zener (voltage reference/clamp), TVS (transient protection) and LED.

Forward voltage drop, reverse voltage, forward current, reverse recovery time, power rating and package.

Schottky for low-drop high-frequency switching; fast recovery for flyback; Zener for references; TVS for surge protection.

Diodes are high-volume commodities; verify brand and batch to avoid recycled stock. HuaXinGou sources common families with full reel options.

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What is a Schottky diode?

A metal-semiconductor diode with low forward drop (~0.3V) and fast switching, ideal for SMPS output rectification.

What is a Zener diode used for?

Voltage clamping and reference; it conducts in reverse breakdown at a specified voltage.

What is reverse recovery time?

The time to switch from conduction to blocking; fast recovery diodes minimize switching loss.