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.

Transistors

Bipolar Transistors - BJT

Bipolar Transistors - Pre-Biased

Darlington Transistors

Digital Transistors

GaN FETs

IGBT Modules

IGBT Transistors

IGBTs

JFETs

MOSFETs

RF Transistors

SiC MOSFETs

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty

SP2502KT2

SOT-23 MOSFETs ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Siliup

2522
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between Fri. 03 Jul to Wed. 08 Jul

July 2026

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32	2	3	4	5	6	7	8

AUD 0.0102

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MMBT5401

160V 300mW 200@10mA,5V 600mA PNP SOT-23 Bipolar Transistors - BJT ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

amsem

2522
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July 2026

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31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.011

Multiples of: 50

MMBT4401

Transistors (NPN/PNP) SOT-23-3 RoHS
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Youtai

2522
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31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0116

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BC847BT

SOT-523 Bipolar Transistors - BJT ROHS
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SLKORMICRO

2522
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32	2	3	4	5	6	7	8

AUD 0.0118

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S9015

Transistors (NPN/PNP) SOT-23 RoHS
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LGE

2522
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31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0122

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BC807-40

SOT-23 Bipolar Transistors - BJT ROHS
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YFW Electronics

2522
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31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0133

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BC807-16

SOT-23 Bipolar Transistors - BJT ROHS
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Hong Kong Chuangji

2522
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30	19	20	21	22	23	24	25
31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0141

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DTC144EUA

SOT-323 Digital Transistors ROHS
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Hong Kong Chuangji

2522
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July 2026
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30	19	20	21	22	23	24	25
31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.015

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DTC143TUA

SOT-323 Digital Transistors ROHS
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Changjing Electronics Technology

2522
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July 2026

July 2026
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30	19	20	21	22	23	24	25
31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.015

Multiples of: 20

2SC2712-GR

Transistors (NPN/PNP) NPN 150mA 50V SOT-23 RoHS
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Blue Rocket

1649
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July 2026