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

MMBT2222A

Transistors (NPN/PNP) SOT-23 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.

Bourne

15277
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between Thu. 30 Jul to Tue. 04 Aug

August 2026

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35	23	24	25	26	27	28	29
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AUD 0.0193

Multiples of: 50

SP2004KT3

SOT-323 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

921
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between Thu. 30 Jul to Tue. 04 Aug

August 2026

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35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0119

Multiples of: 50

MMBT2907A

Transistors (NPN/PNP) SOT-23 RoHS
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Pingjingsemi

873
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August 2026

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AUD 0.0103

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BC807-40

SOT-23 Bipolar (BJT) ROHS
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GOODWORK

873
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AUD 0.0131

Multiples of: 50

SI2301

20V 3A 75m@2.5V,2A 800mW 400mV@250uA 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.

MOT

873
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August 2026

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34	16	17	18	19	20	21	22
35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0143

Multiples of: 50

PMBT5401

SOT-23 Bipolar Transistors - BJT ROHS
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PAKER Microelectronics

776
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August 2026

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35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0222

Multiples of: 50

KTC3875

50V 150mW 200~400 150mA NPN 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.

Yongyutai Electronics

727
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August 2026

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34	16	17	18	19	20	21	22
35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0159

Multiples of: 50

BC847C

45V 200mW 420@2mA,5V 100mA NPN SOT-23 Bipolar Transistors - BJT ROHS
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MSKSEMI

436
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34	16	17	18	19	20	21	22
35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0105

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S8050

SOT-23 Bipolar Transistors - BJT ROHS
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Starsea

436
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August 2026

August 2026
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32	2	3	4	5	6	7	8
33	9	10	11	12	13	14	15
34	16	17	18	19	20	21	22
35	23	24	25	26	27	28	29
36	30	31	1	2	3	4	5

AUD 0.0153

Multiples of: 50

S8050

Transistors (NPN/PNP) SOT-23 RoHS
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AnBon

48
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August 2026