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A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. Transistors are one of the basic building blocks of modern electronics. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
Source-Drain Ratings and Characteristics
Parameter | Typ- | Max. | |
Is | Continuous Source Current (Body Diode) | — | 49 |
Ism | Pulsed Source Current (Body Diode)① | — | 160 |
VsD | Diode Forward Voltage | — | 1.3 |
trr | Reverse Recovery Time | 63 | 95 |
Qrr | Reverse Recovery Charge | 170 | 260 |
Naming
The term transistor was coined by John R. Pierce as a contraction of the term transresistance. According to Lillian Hoddeson and Vicki Daitch, authors of a biography of John Bardeen, Shockley had proposed that Bell Labs' first patent for a transistor should be based on the field-effect and that he be named as the inventor.
Material
Most transistors are made from very pure silicon, and some from germanium, but certain other semiconductor materials are sometimes used. A transistor may have only one kind of charge carrier, in a field-effect transistor, or may have two kinds of charge carriers in bipolar junction transistor devices.