A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor...

field-effect transistor, or may have two kinds of charge carriers in bipolar junction transistor devices. Compared with the vacuum tube, transistors are generally...

An insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily forming an electronic switch. It was developed to...

point-contact transistor was commercialized and sold by Western Electric and others but was eventually superseded by the bipolar junction transistor, which was...

instead inventing the point-contact transistor in 1947, which was followed by Shockley's bipolar junction transistor in 1948. The first FET device to be...

The heterojunction bipolar transistor (HBT) is a type of bipolar junction transistor (BJT) which uses differing semiconductor materials for the emitter...

alloy-junction and grown junction processes for making bipolar junction transistors (BJTs). Bell Labs developed the first prototype diffused junction bipolar...

inventions in history. Transistors are broadly classified into two categories: bipolar junction transistor (BJT) and field-effect transistor (FET). The principle...

combinations of p-type and n-type semiconductors; for example, the bipolar junction transistor (BJT) is a semiconductor in the form n–p–n or p–n–p. Combinations...

Transistor–transistor logic (TTL) is a logic family built from bipolar junction transistors. Its name signifies that transistors perform both the logic...