About Transistors

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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PZTA42-E6327


PZTA42-E6327 SOT223 TRANSISTOR SMD
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ON Semiconductor Availability : 0
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USD 0.3147

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012111XB


ZVP2110A TRANSISTORS-M*
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Diodes Incorporated Availability : 0
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USD 0.3151

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BFY90


RF Bipolar Transistors Bipolar/LDMOS Transistor
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Microchip Availability : 0
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USD 0.7465

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BF470


BF470 SEE KSA1406CSTU PNP TO126 250V 30MA VIDE O OUT
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Philips Availability : 0
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USD 0.3269

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2SA715


2SA715C TO-126 TRANSISTOR T/HOLE
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Hitachi Availability : 0
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USD 0.3424

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ULN2003A-ST


Darlington Transistors Seven NPN DRIVER Array PDIP-16
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STMicroelectronics Availability : 0
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USD 0.3473

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BD438-CUT


BD438-CUT PINS PNP PWR TRANSISTOR
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STMicroelectronics Availability : 0
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USD 0.3649

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MCT1413P


MCT1413P IC DIP
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Motorola Availability : 0
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USD 0.3649

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TIP121


TIP121 USEUP THEN841634BB T/HOLE
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ON Semiconductor Availability : 0
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USD 0.3759

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J177


J177 PCH JFET TO92 T/HOLE
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InterFET Availability : 0
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USD 0.3784

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ULN2803


Darlington Transistors Eight NPN Array
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STMicroelectronics Availability : 0
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USD 0.3912

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PMV32UP215


MOSFET P-CH -20 V -4 A
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Generic Availability : 0
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USD 0.4067

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BF256A


BF256A N-CHNL TO92 30V FET (3-7M T/HO
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ON Semiconductor Availability : 0
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USD 0.4367

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MJE13005


MJE13005 #0702 PCN12279
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Central Semiconductor Availability : 0
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USD 0.4556

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BAS216/115


BAS216/115 SOD110 75V 250MA HIGH SPEED DI
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Philips Availability : 0
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USD 0.4428

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ULN2803A/SGS


ULN2803A/SGS LINEAR 8* DARL ARRAY DIP
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STMicroelectronics Availability : 0
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USD 0.4541

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IRF540NS


IRF540NS HEXFET SMD
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Infineon Availability : 0
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USD 0.4678

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ULN2003AD/CUT


ULN2003AD DARLINGTON DRIVER SO-16 SMD
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Texas Instruments Availability : 0
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USD 0.4715

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417095EB


RFD14N05 PWR MOS 50V/14A/0.1 T/HOLE
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ON Semiconductor Availability : 0
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USD 0.4879

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BD242C


TRANSISTOR PNP 100V 3A TO-220 ELECTRONICS PART
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ON Semiconductor Availability : 0
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USD 0.4916

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