Which characteristic of a Schottky diode makes it a better choice than a silicon junction diode for use as a power supply rectifier?

Explanation

A Schottky metal-to-semiconductor barrier starts conducting at roughly 0.2 V to 0.4 V instead of the 0.7 V of a silicon PN junction, so a rectifier built from it dissipates less power and runs cooler — the decisive advantage in a power supply. Schottky diodes actually have lower reverse breakdown voltage, and they store less charge, not more.