The transistor is a solid state semiconductor device that can be used for amplification, switching, voltage stabilization, signal modulation and many other functions. It allows a variable current, from an external source, to flow between two of its terminals depending on the smaller voltage or current applied to a third terminal. Transistors are made either as separate components or as part of an integrated circuit.
Transistors are divided into two main categories: bipolar junction transistors (BJTs) and field effect transistors (FETs). Transistors have three terminals where, in simplified terms, the application of current (BJT) or voltage (FET) to the input terminal increases the amount of charge in the active region, and thereby effectively increases the conductivity between the other two terminals, and hence controls current flow between those terminals. The physics of this "transistor action" is quite different for the BJT and FET; see the respective articles for further details.
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PowerTech - Manufacturer of silicon power transistors and industrial devices for the military and aerospace markets. Provides custom packaging of own and other manufacturers' chips. Online line card, specifications and application notes.
Semiconductor Technology, Inc. - Manufacturer of transistors specialising in high voltage and dual differential amplifier transistor technology. Online line card, specifications and RFQ.
Meta Description: [ Manufacturer of high voltage transistors, mosfet, darlington, NPN & PNP. Available in low power, medium power Epoxy & Mosfet (N-Channel) and low power transistors, and differential amplifiers ]
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