BJT
Noun
Meaning
BJT (plural BJTs)
(semiconductors) Initialism of bipolar junction transistor.
Synonyms
Examples
A mnemonic device for the NPN transistor symbol is "not pointing in", based on the arrows in the symbol and the letters in the name. citation PNP The symbol of a PNP BJT.
Even after MOSFETs became widely available, the BJT remained the transistor of choice for many analog circuits such as amplifiers because of their greater linearity and ease of manufacture.
Because of this exponential relationship, the BJT has a higher transconductance than the FET.
Both types of BJT function by letting a small current input to the base control an amplified output from the collector.
By design, most of the BJT collector current is due to the flow of charges injected from a high-concentration emitter into the base where they are minority carriers that diffuse toward the collector, and so BJTs are classified as minority-carrier devices.
Hence, a particular transistor may be described as silicon, surface-mount, BJT, n–p–n, low-power, high-frequency switch.