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Transistors

Transistors

Discreet transistors provide the switching and amplification needed for robotics and automation projects. They let microcontrollers drive motors, solenoids, or indicators, and form the backbone of sensor amplifiers and signal conditioning stages. You’ll find both NPN and PNP types, including higher‑gain Darlingtons for easier interface to heavier loads, plus kits and packs that make prototyping convenient.

Typical attributes include how much current and voltage they can handle, how much gain they offer, packaging style, and whether they suit through‑hole boards or compact surface‑mount assemblies. The right choice depends on how you plan to integrate them with power rails, logic levels, and other components in the system, along with reliability and ease of replacement on the bench or in a production build.

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Transistor - NPN, 50V 800mA (BC337)

Code: SKU-003727

This is the BC337 an NPN silicon BJT (Bipolar Junction Transistor). This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The BC337 is specifically rated at 50V and 800mA max.

$ 0.85

Not currently available

Bag-o-Transistors

Code: SKU-011281

Stock your workbench with this fundamental parts kit containing five 2N3904 (NPN) and five 2N3906 (PNP) general-purpose transistors for all your project needs.

$ 0.85

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Shipping from $4.90

+221 more from our supplier in 7-10 days

SparkFun Beginner Parts Kit

Code: SKU-011048

The SparkFun Beginner Parts Kit is a starter assortment of essential through-hole components, including capacitors, ICs, regulators, and LEDs, all organised in a handy parts box.

$ 34.95

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Shipping from $9.90

+1 more from our supplier in 7-10 days

SparkFun Discrete Semiconductor Kit

Code: SKU-002186

The SparkFun Discrete Semiconductor Kit addresses your needs of only needing one or a couple transistors without you needing go and order a one transistor.

$ 37.95

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Shipping from $9.90

+257 more from our supplier in 7-10 days

Transistor - NPN, 60V 4A (2N5192G)

Code: SKU-005037

This is the 2N5192G an NPN silicon transistor. This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The 2N5192G is specifically rated at 60V and 4A max.

$ 2.00

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Shipping from $4.90

+183 more from our supplier in 7-10 days

Transistor - NPN, 100V 5A (TIP122G)

Code: SKU-011256

The TIP122G is a 100V/5A NPN Darlington transistor, a high-gain switch ideal for allowing a microcontroller to control heavy loads such as motors, solenoids, or LEDs.

$ 2.50

Not currently available

Transistor - NPN, 60V 200mA (2N3904)

Code: SKU-000063

These are very common high quality BJT NPN transistors made by ST. Micro.

$ 0.85

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Shipping from $4.90

+92 more from our supplier in 7-10 days

Transistor - PNP 60V 200mA (2N3906)

Code: SKU-000064

These are very common high quality BJT PNP transistors made by ST. Micro. Rated up to 200mA.

$ 0.80

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Shipping from $4.90

+4508 more from our supplier in 7-10 days