What is a JFET?
A JFET, or junction gate field-effect transistor, is a type of field-effect transistor. A JFET can be used as a voltage-controlled resistance or as an electronically-controlled switch. A p-type JFET consists of a channel of semiconductor material containing a large amount of positive charge carriers or holes, whereas an n-type JFET consists of a channel of semiconductor material containing a large amount of negative charge carriers or holes. At each end of the JFET, ohmic contacts form the source and drain. Electric charge flows through the channel between the source and drain. Electric current can be impeded or switched off by applying a reverse bias voltage to a gate.
Types of JFETs
There are several different kinds of JFETs. At Future Electronics we stock many of the most common types categorized by Channel Type, Maximum Gate-Source Voltage, Minimum Drain Current, Drain-to-Source Voltage and Packaging Type. The parametric filters on our website can help refine your search results depending on the required specifications.
The most common sizes for Drain-to-Source Voltage are 25 V and 30 V. We also carry JFETs with Drain-to-Source Voltage up to 40 V. Channel Type can be Dual N-Channel, N-Channel or P-Channel.
JFETs from Future Electronics
Future Electronics has a complete selection of semiconductor junction gate field effect transistors from several manufacturers that can be used as a JFET amplifier or for any types of applications that may require a JFET transistor circuit. Simply choose from the JFET technical attributes below and your search results will quickly be narrowed in order to match your specific JFET application needs.
If you have a preferred brand, we deal with Calogic, Fairchild, NXP, ON Semiconductor or Vishay, among other manufacturers. You can easily refine your JFET product search results by clicking your preferred JFET brand below from our list of manufacturers.
Applications for JFETs:
JFETs can be used for several applications including:
- • High Input Impedance Amplifier
- • Low-Noise Amplifier
- • Differential Amplifier
- • Constant Current Source
- • Analog Switch or Gate
- • Voltage Controlled Resistor
Choosing the Right JFET:
When you are looking for the right JFETs, you can filter the results by various attributes with the FutureElectronics.com parametric search: by Drain-to-Source Voltage (-30 V, 25 V, 30 V,…), Channel Type (Dual N-Channel, N-Channel or P-Channel) or Minimum Drain Current (from -50 mA to 75 A), to name a few. You will be able to find the right semiconductor junction gate field effect transistors such as a JFET amplifier or for any application types requiring a JFET transistor circuit.
JFETs in Production Ready Packaging or R&D Quantities
We offer customers many of our products in quantities that will help you avoid unneeded surplus.
In addition, Future Electronics offers its clients a unique bonded inventory program designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch so you can find out more on how you can avoid possible shortages.