Terminology » RF Components » VMOS FET vs UMOS FET: Key Differences Explained

VMOS FET vs UMOS FET: Key Differences Explained

mosfet vmos umos semiconductor power

This page highlights the key differences between VMOS FET and UMOS FET. Below, you’ll find a detailed comparison of these two types of power MOSFETs.

VMOS FET

The full name of VMOS FET is Vertical Metal Oxide Silicon FET. In this type of power MOSFET, the gate is cut in a V-shape vertically into the substrate.

VMOS FETs are known for delivering high current from the Source (S) terminal to the Drain (D) terminal. This is mainly due to the wide depletion region width.

VMOS FET vs UMOS FET Image: VMOS FET vs UMOS FET

UMOS FET

UMOS FETs are named for their U-shaped structure. They are also known as Trench Gate MOS.

This device exhibits a low maximum electric field on top of the gate, which translates to a higher maximum voltage capability compared to VMOS FET devices.