fundamentals of iii v devices hbts mesfets and hfe re MESFETs? A MESFET is a type of field-effect transistor that uses a Schottky metal-semiconductor junction instead of a p-n junction to control conduction. It is predominantly fabricated using III-V materials like GaAs or InP, making it a popular choice for high-frequency ap R Richard Hessel Aug 22, 2025