SparkFun
Transistor - NPN (BC337)
The BC337 is an NPN silicon bipolar junction transistor (BJT) suitable for switching and amplification in general-purpose circuits. With a collector current ...
The BC337 is an NPN silicon bipolar junction transistor (BJT) suitable for switching and amplification in general-purpose circuits. With a collector current rating of 800 mA and a collector-emitter voltage of 50V, it can drive relays, LEDs, small motors, and other moderate loads directly from a microcontroller output.
Key Features
- Type – NPN Bipolar Junction Transistor
- Collector-Emitter Voltage (VCEO) – 50V
- Max Collector Current (IC) – 800 mA
- Package – TO-92
- Drop-In Replacement – Compatible with P2N2222A transistor
Ideal For
- Switching loads from Arduino or Raspberry Pi GPIO pins
- Driving relays, LEDs, and small motors
- Signal amplification circuits
- General-purpose electronics prototyping
Package Contents
- 1× BC337 NPN Transistor (TO-92)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
Find this product in
Brands
BC337 Datasheet
Datasheet · 188.5 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 345.9 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
