OverviewTypesHistoryImportanceSimplified operationComparison with vacuum tubesDevice identificationConstruction
Transistors are categorized by • Structure: MOSFET (IGFET), BJT, JFET, insulated-gate bipolar transistor (IGBT), other types .• Semiconductor material (dopants): • Electrical polarity (positive and negative): NPN, PNP (BJTs), N-channel, P-channel (FETs).