15 Pieces BC549 BC549B TO-92

Description

What it is

Product ARD0012255 is a kit of 15 pieces of NPN transistor BC549/BC549B in TO-92 format, useful for various types of electronic projects that require the control of external devices from Arduino.

Features

• Kit of 15 pieces
• NPN Transistor BC549/BC549B
• TO-92 format

What it is for

The BC549/BC549B transistors are useful for controlling external devices such as LEDs and motors directly from Arduino. They are ideal for both beginners and more experienced makers, being a fundamental component in many electronic projects.

Tutorial: How to use BC549/BC549B TO-92

The NPN transistor BC549/BC549B is a fundamental component for electronic projects, ideal for both beginners and more experienced makers. This component will help you control external devices such as lamps or motors directly from Arduino.

What you need

• Arduino uno
• LED
• resistor

Steps

1. Connect the base of the transistor to the output pin of the Arduino.
2. Connect the emitter to the negative terminal of the battery and the resistor.
3. Attach the collector (collector) to the positive power supply of an external device, such as an LED or motor.
4. Check the base-emitter voltage on the datasheet to ensure proper operation.
5. Write an Arduino sketch to control the output of the pin connected to the base of the transistor.

Example code

void setup() {
  pinMode(2, OUTPUT);
}

void loop() {
  digitalWrite(2, HIGH);
  delay(1000);
  digitalWrite(2, LOW);
  delay(1000);
}

Mini project

Create a controllable lighting system using the BC549 to turn an LED on and off.

Common mistakes

• Connect the emitter to the positive terminal of the battery.
• Do not check the base-emitter voltage on the datasheet.
• Use too much current without additional protection.
• Ignore the value of the Arduino pin output relative to the base of the transistor.

Recommended accessories

• Variable resistors
• Motors control modules
• LEDs of various colors and types
• Motion sensors

Frequently asked questions

Is the BC549 compatible with the BC547?
Yes, both are NPN transistors and can be interchangeable in many cases.

What is the difference between BC549 and BC549B?
BC549B has an additional power rating feature compared to BC549, check the datasheet for specific details.