Zener Diode Definition

zēnər

noun

A semiconductor diode usually used as a voltage regulator because its resistance breaks down at a precise, predetermined voltage level (zener voltage), at which time it maintains a constant voltage while producing a sudden large increase in current.

Webster's New World

Origin of Zener Diode

After Clarence Melvin Zener (1905–1993), American physicist

From American Heritage Dictionary of the English Language, 5th Edition
From Clarence Zener, American physicist.

From Wiktionary