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Key Features:

• High-performance NPN bipolar junction transistor (BJT)

• Ideal for switching, signal amplification, and motor/relay control

• Collector current up to 800mA

• Fast switching speed suitable for PWM and logic circuits

• Compatible with Arduino, Raspberry Pi, microcontrollers

• Durable TO-18 metal can package

• Low saturation voltage and high reliability

Product Description (Detailed):

The 2N2222A is a widely used NPN BJT transistor designed for general-purpose switching and low-to-medium power amplification. Known for its high current gain, fast response, and robust TO-18 metal can package, it is preferred in industrial, academic, and DIY electronics applications.

Capable of handling up to 800mA of collector current, the 2N2222A is perfect for controlling relays, motors, LEDs, or acting as an analog amplifier in audio or signal circuits. It's a go-to choice in Arduino projects where reliable switching and compact design are required.

Technical Specifications:

How to Use:

Pin Configuration (TO-18, flat side facing you):

• Pin 1: Emitter

• Pin 2: Base

• Pin 3: Collector (connected to case)

Typical Use Cases:

• Use with Arduino digital output to control relays, LEDs, or motors

• Use as common-emitter amplifier for signal processing

• Create inverter or NOT logic gates with simple resistors

For switching: Connect base through resistor (1kΩ) to Arduino pin, emitter to GND, and collector to load (relay/LED) → to Vcc.

Applications:

• Relay and motor driver circuits

• General-purpose switching (Arduino/AVR/STM32)

• Signal amplification (audio, RF, analog)

• Oscillators, timers, and logic building blocks

• DIY electronics and robotics projects

• Educational kits and prototyping boards

Package Includes:

• 1 × 2N2222A Transistor (TO-18 Metal Can)