How much voltage can LED lights withstand?

LED can generally withstand an excess voltage of about 20%, too high will heat or even burn.

The normal voltage of an LED is best controlled at about 110% of its rated voltage. LED lamp voltage conventional specifications are 12V and 24V, 12V LED lamp belt is three leds for a group of 24V LED lamp belt is 6 leds for a group.

The most commonly used on the market is 4.5V, there are also 3V, 1.5V, 6V, higher or lower.

Commonly used are plain bright, high light and super bright. The general bright is used as an indicator light, and the high and super bright are generally used as lamps or torches.

Extended data

As we all know, the wavelength range of the visible spectrum is 380nm ~ 760nm, which is the seven colors of light that can be felt by the human eye - red, orange, yellow, green, blue, purple, but these seven colors of light are each a monochromatic light.

For example, the peak wavelength of red light emitted by leds is 565nm. There is no white light in the visible light spectrum, because white light is not monochromatic light, but a composite light composed of a variety of monochromatic light, just as sunlight is composed of seven monochromatic light of white light, and the white light in the color TV is also composed of three primary colors of red, green and blue.

It can be seen that to make the LED emit white light, its spectral characteristics should include the entire visible spectral range. However, to manufacture LED with this performance, it is impossible under process conditions. According to people's research on visible light, the white light that the human eye can see requires a mixture of at least two kinds of light, that is, two-wavelength luminescence (blue light + yellow light) or three-wavelength luminescence (blue light + green light + red light).

The above two modes of white light, both need blue light, so the uptake of blue light has become a key technology for the manufacture of white light, that is, the current "blue light technology" pursued by major LED manufacturing companies. There are only a few manufacturers in the world that master "blue light technology", so the promotion and application of white leds, especially the promotion of high-brightness white leds in our country still has a process.