What are the differences between MOSFETs and field-effect transistors? -ASIM

Mosfets and Field-Effect Transistors: Essential Differences and Selection Guide

一、Core concept: Field-effect transistor (FET) is a general term, while MOSFET is a subcategory

1. Field-effect Transistor (FET)：

• Junction field-effect transistor（JFET）：The PN junction gate needs to operate with reverse bias voltage.
• Insulated gate field-effect transistor（MOSFET）：Metal-oxide-semiconductor gate structure.
• Definition：Voltage-controlled semiconductor devices that control the current in the conductive channel through the gate voltage (distinct from the current control of transistors).




2. MOS管（MOSFET）：

• Full name: Metal-Oxide-Semiconductor Field-effect Transistor (FET).
• Core features: There is a silicon dioxide insulating layer between the gate and the channel, and the input impedance is extremely high (>10^9 Ω).