TUNNEL DIODE A tunnel diode is a semiconductor with a negative resistance region that results in very fast switching speeds, up to

The unijunction transistor(UJT) is a three terminal device with characteristics very different from the conventional 2 junction, bipolar transistor. It is a

Early semiconductor developments used germanium as the commercial, semiconductor material. Due to its ease of processing and more stable temperature characteristics, silicon

Multiple diode packaging or diode arrays have been an important semiconductor product. They save assembly time and improve reliability over individually packaged

The diac is a bidirectional trigger diode which is designed specifically to trigger a triac or SCR. Basically the diac does not

Refer to the characteristic curve of a typical rectifier(diode) in the figure below. The forward characteristic of the curve we have previously

The varactor diode symbol is shown below with a diagram representation: When a reverse voltage is applied to a PN junction, the

The triac is a three terminal semiconductor for controlling current in either direction. Below is the schematic symbol for the triac. Notice

Transient Voltage Suppressors (TVS) are semiconductor devices designed to provide protection against voltage and current transients. The silicon TVS is designed to

The Silicon Controlled Rectifier (SCR) is simply a conventional rectifier controlled by a gate signal. The main circuit is a rectifier, however

A FET with an oxide coating between gate and channel is called a MOSFET (metal- oxide semiconductor field effect transistor). The figure

The J-FET (Junction Field Effect Transistor ) and the MOS-FET (Metal-Oxide-Semiconductor FET) are voltage controlled devices: that is a small change in