The first is the quality of LED, and then consider the cost performance.
How to choose?
Firstly, the actual use of LED is analyzed to determine the required LED packaging model, and then the corresponding LED lamp beads are matched according to the photoelectric characteristic parameters.
Second, the price
1, the required quantity of LED lamp beads
2. Photoelectric characteristic parameters of LED.
Brightness of LED lamp beads
Different colors have different luminous intensities, and the commonly used unit is mcd, that is, milliCandeira. The higher the value, the greater the luminous intensity, that is, the brighter. This is an important index for selecting LED lamps. The higher the brightness requirement, the more expensive it is, because the manufacturing cost of high-brightness LED chips is high.
Color of LED lamp beads
There are many small packaging factories without spectrometers, and the quality is difficult to guarantee. The color consistency of LEDs without spectral separation is poor, and of course the price difference is also relatively large. For example, the white light on the control panel of Little Swan washing machine requires high consistency, so it requires extremely high light splitting and color separation, and the higher the price!
● LED chip
The origin of the chip determines the price and quality of LED lamp beads. Customers can often determine the quality of LED lamps by knowing the supplier of LED chips used in LED lamps, because chips are the biggest factor in determining LED prices.
Therefore, knowing the chip suppliers can roughly determine the price range of LED lamps, which is one of the effective means for experienced buyers to evaluate suppliers.
● LED package
It is divided into resin encapsulation and silica gel encapsulation. Resin packaging is cheaper, because the heat dissipation performance is slightly worse, and everything else is the same. Silica gel packaging has good heat dissipation performance, so the price is a little more expensive than resin packaging.
● LED life
Although the service life of LED is 80 ~ 65438+100000 hours, because LED is a constant current component, the constant current effect of LED lamps produced by different manufacturers is different, and of course the service life is also different. As users, we need to have a very clear understanding of the service life of LED lamps. (There are a lot of lamp beads in the market, which are dull stocks recovered by manufacturers. )
● LED color temperature: Pay special attention when purchasing.
The color temperature is below 3300K, and red gives people a warm feeling; There is a steady atmosphere and warm feeling, which is generally called warm color temperature. The color temperature is between 3000-6000 K, and people have no obvious visual and psychological effect in this color, but have a refreshing feeling; So it is called "neutral" color temperature. The color temperature exceeds 6000K, and the light color is blue, giving people a cold feeling, which is generally called cold color temperature.
●FPC material:
FPC can be divided into two types: calendered copper and coated copper. Coated copper is cheaper, while calendered copper is more expensive. Copper-plated pads are easy to fall off when bent, but calendered copper is not. What kind of FPC material to use depends on the buyer's own decision according to the use environment. Has FPC passed the environmental protection certification and UL certification? Whether there is a patent for LED, etc. Some are certified and patented, some are more expensive and some are cheaper.
I hope it helps. If you need help, you can send an email to the professional LED manufacturer: salse08 @126.com. Thank you.