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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715007RB


BC639 LOOSE/DELTA PINS TO92 800MW NPN 80V 1 T/HOLE
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USD 0.0537

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2N3904G


2N3904G ROHS NPN TO92 60V SWITCHING TRANS T
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Central Semiconductor Availability : 0
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USD 0.0559

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BCX70J/215


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

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PMBT6429/T1


PMBT6429/T1 A.G MANUFACTURING T/HOLE
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NXP Availability : 0
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USD 0.0595

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2N4124


2N4124 TRANSISTOR T/HOLE
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Central Semiconductor Availability : 0
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USD 0.0597

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BC557


Bipolar Transistors - BJT PNP -45V -100mA HFE/800
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USD 0.0624

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BC337-25/116


TO-92 NPN 45V RADIAL Reel T/HO Reel
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USD 0.0635

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BC547C-FSC


Bipolar Small Signal NPN 45V 100mA HFE/8
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USD 0.0655

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FMMT38CTA


FMMT38CTA SOT23 TRANS 7J SMD
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Diodes Incorporated Availability : 0
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USD 0.0673

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BC81840


BC81840 SEMIS NON STOCKED T/HOLE
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USD 0.0675

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BAX18/A52R


BAX18/A52R AXIAL SWITCH DIODE T/HOLE
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Philips Availability : 0
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USD 0.0679

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BC547-112


BC547 100MA 45V SOT54 VARIANT PKGE DELTA PIN T/HOLE LOOSE
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Central Semiconductor Availability : 0
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USD 0.0688

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SS9013FBU


Transistors Bipolar - BJT NPN40V500MA
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USD 0.0689

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BSR16/215


BSR16/215 SOT23 PNP EPITAXIAL TRANS SMD
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USD 0.0692

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MPSA75


MPSA75 E-LINE TRANS T/HOLE
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USD 0.0709

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BF423


BF423 PNP TO92 250V 20MA VIDEO OUTP
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USD 0.0774

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BSS84/NXP


MOSFET P-CH -50 V -180 mA SOT23 SMD
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NXP Availability : 0
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USD 0.0799

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PN2222A/RA


PN2222A/RA NPN GP TRANS MP T/HOLE
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USD 0.0886

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BFR505/T1


BFR505/T1 WIDEBAND TRANSISTOR SOT416
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NXP Availability : 0
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USD 0.0936

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BC338


BC338 25V 0.5A TO92 NPN BIP X TOR /
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ON Semiconductor Availability : 0
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USD 0.0944

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