JFET Junction Field Effect Transistor A semiconductor device that operates by altering the conductivity of a region of the semiconductor (the channel) between two contacts (source and drain) by application of a voltage to a third terminal (gate). The current flow between source and drain is controlled by the gate voltage. In a JFET device, the gate voltage is applied to the channel across a P-N junction, in contrast to its application across an insulator in a conventional MOSFET. JFETs are of both P-channel and N-channel types. Schematic symbol for an N-channel JFET Schematic symbol for a P-channel JFET Structure of an N-channel JFET See also FET, MOSFET. Meanwhile, AMS has a good JFET tutorial page here.

Legalities    Page author: Eric Seale   This page was last updated on This work is licensed under a Creative Commons License.