Which transistor to choose to control a 5V 0.5A light bulb with Arduino?

Question

Arduino

You need to control a light bulb with an arduino. The light bulb will be a heating element (on the stand) How hot is a light bulb with such characteristics, and how to control it with an arduino?

Answer 1

The light bulb will emit power 5 * 0.5 = 2.5 watts.
To control the light bulb, you will need a transistor key on a bipolar transistor (KT818-KT819, depending on the circuit (tear + or -)), or field-effect, of the IRL series.