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Bipolar Transistors
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, such as a field-effect transistor (FET), uses only one kind of charge carrier. A bipolar transistor allows a small Electric current, current injected at one of its Terminal (electronics), terminals to control a much larger current between the remaining two terminals, making the device capable of Amplifier, amplification or Electronic switch, switching. BJTs use two p–n junctions between two semiconductor types, n-type and p-type, which are regions in a single crystal of material. The junctions can be made in several different ways, such as changing the Doping (semiconductor), doping of the semiconductor material as it is grown, by depositing metal pellets to form alloy junctions, or by such methods as diffusion of n-type and p-type doping substances into the crystal. The superior predictability and performance of jun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SOT-23
A small outline transistor (SOT) is a family of small footprint, discrete Surface-mount technology, surface mount transistor commonly used in consumer electronics. The most common SOT are SOT23 variations,. link froamkor.com/packaging/leadframe/sot23-tsot/ref> SOT23-5 differs from SOT23 in a wider body of instead of . Also, manufacturers offer the nearly identical thin small outline transistor (TSOT/TSOP) package, where lower height is important. SOT23, SOT323, SOT416 The SOT23 package is very popular and a common package for transistors, as well as diodes and voltage regulators. SOT23-5, SOT353, SOT553 SOT23-6, SOT363, SOT563 SOT23-8 SOT54 SOT54 is an alternate designation for the JEDEC TO-92 package. SOT23-4, SOT143, SOT343 SOT490 SOT89-3 The SOT89-3 electrically only has three leads (contact/pin). The wide lead (tab) is physically part of the middle lead on the other side of the package. Some call this package a SOT89-4, since it visually appears to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
