About Transistors

A transistor is a semiconductor device that is commonly used to amplify or switch electronic signals. It consists of three terminals, normally referred to as the emitter, base and collector. The transistor operates in four main states: cutoff, forward active, reverse active and saturation. It acts as an electrical switch when forward biased, meaning a current is allowed to flow between the two terminals. When it is reverse biased, meaning the current flows in the opposite direction, the device is turned off. Transistors are used in amplifying circuits to amplify voltage, current, or even power. They are also used in digital logic circuits to switch between two or more stable states.

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BCV47/215


Darlington Transistors TRANS DARLINGTON
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NXP 17460
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USD 0.1113
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BC856B/215


BC856B/215 SOT23 PNP SMALL SIG TRANS MARK
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Taiwan Semiconductor 8730
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USD 0.0083
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BC856A


BC856A T/R TRANSITOR
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NXP 8633
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USD 0.0134
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BC846BT,115


TRANSISTOR NPN 100MA 65V SOT41 6
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NXP 5820
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USD 0.0264
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BFS17A,215


Trans GP BJT NPN 15V 0.025A 3-Pin TO-236AB TR
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NXP 5820
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USD 0.0753
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PZTA42-E6327


PZTA42-E6327 SOT223 TRANSISTOR SMD
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ON Semiconductor 4423
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USD 0.3147
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BC849CLT1G


Bipolar (BJT) Transistor NPN 30 V 100 mA 100MHz 300 mW Surface Mount SOT-23-3 (TO-236)
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ON Semiconductor 2910
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USD 0.0105
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Hot PN2907ATA


Bipolar (BJT) Transistor PNP 60 V 800 mA 200MHz 625 mW Through Hole TO-92-3
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ON Semiconductor 2910
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USD 0.0316
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TBC859-B(T5L


TBC859-B(T5L M) LTB 13-2-98 SMD
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Toshiba 2910
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USD 0.0478
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BCX70J/215


BCX70J/215 SOT23 45V 200MW PNP TRANS MARK
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ON Semiconductor 2910
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USD 0.0564
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