Potência LED
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
LED
About this calculator
The LED Power Dissipation Calculator is an online tool that allows you to calculate the power dissipated by an LED. The power is calculated based on the voltage and current passing through the LED, using the formula P = V·I, where P is the power in watts (W), V is the voltage in volts (V), and I is the current in amperes (A).
This calculator is useful for designers and engineers working with electronic circuits who need to determine the power that an LED will dissipate in a given circuit. It is also useful for students and hobbyists who want to learn more about electronics and understand how LEDs work.
When using this calculator, it is essential to pay attention to the units of measurement used. The voltage and current must be entered in the correct units (volts and amperes, respectively) for the result to be accurate. Additionally, it is crucial to remember that the power dissipated by an LED can affect its lifespan and performance.
The power dissipated by an LED can also vary depending on the type of LED used. High-power LEDs can dissipate more energy than low-power LEDs, and this must be taken into account when designing an electronic circuit.
Frequently asked questions
What is the power dissipated by an LED?
The power dissipated by an LED is the energy converted into heat and light by the LED.
Why is it important to calculate the power dissipated by an LED?
Calculating the power dissipated by an LED is important to ensure that the LED operates within its temperature and lifespan limits.
What are the units of measurement used in the calculator?
The calculator uses volts (V) for voltage and amperes (A) for current.
Can I use this calculator for high-power LEDs?
Yes, the calculator can be used for high-power LEDs, but it is essential to remember that these LEDs can dissipate more energy than low-power LEDs.
How can I prevent the LED from overheating?
To prevent the LED from overheating, it is crucial to ensure that it operates within its temperature limits and that the circuit is designed to dissipate the heat generated by the LED.