wo easy ways to read LED bead parameter indicators

21 views admin 2024-04-17

LED lamp bead parameter indicators are more, compared with most non-electronic professional friends, in order to understand the LED market, you must understand some basic knowledge of LED lamp beads, including some LED parameters and performance indicators

The first is the current of the LED lamp bead, which generally refers to the positive limit current of the LED lamp bead, which refers to the positive electrode of the LED lamp bead and the limit current (IF) of the negative electrode and the negative electrode of the power supply, which is currently about 20MA. Generally, the light decay current of LED lamp beads can not be greater than IF2/3, about 15MA to 18MA. The luminous intensity of LED lamp beads is only positively correlated with IF in the corresponding range, when IF>20MA, the enhancement of brightness has been irregular, so the working current of LED lamp beads is generally selected around 17-19mA. With the continuous development of technology, high-power LED lamp beads are also constantly emerging, such as 0.5WLED(IF=150MA), 1WLED(IF=350MA) and 3WLED(IF=750MA), and other more led lamp bead specifications.

The service life of LED lamp beads is also a crucial indicator. In the instruction manual of the LED lamp bead, it will be indicated how long it can be used, such as it can operate for about 50,000 hours. However, the issue that needs to be noted here is that the life of the LED lamp can not be judged simply from whether the LED lamp bead is still operating. Because leds do not have the problem of filament breakage as traditional lamps do, it will not stop operating directly, but will gradually decline with the passage of time. High-quality LED beads can maintain about 60% of their initial brightness after 50,000 hours of continuous operation. The best way to extend the service life of LED lamp beads is to reduce the heat energy generated by LED chips, which is the root cause of LED loss.