The difference between the lamp bead bracket materials:

At present, there are aluminum brackets, brass brackets, copper brackets, etc. on the market. Aluminum brackets are the cheapest and copper brackets are the most expensive, with a price difference of more than ten times. Even for copper brackets, the price of silver plating varies. The market is generally called good brackets, and most of them are made of silver-plated brass.

Differences in chip size:

Usually the reported chip size is in mil. If there is no high-magnification measuring microscope, it is generally difficult to distinguish. The larger the chip, the brighter the chip. We can compare the chip size by calculating the chip area, such as 23X10, the chip area is 230 square mils, It is a good way to use the chip area to distinguish the chip size.

The difference between wire materials:

The chip and the bracket are connected by gold wire welding. At present, there are two kinds of alloy wire and pure gold wire on the market. Pure gold wire is the best. Gold wire is divided into 0.7, 0.9, 1.0, 1.2, etc. Thick, the lower the heat group, the longer the life, all you need to ask about the material and diameter of the gold wire.

The difference between phosphors:

White light beads are made of blue light chips and yellow phosphors. The phosphors are mainly divided into aluminates and silicates. The performance of aluminates is better than that of silicates. The most representative of aluminates is YAG, which has stable performance. The light decay is low, and the chemical stability of silicate itself is poor, but the brightness is higher than that of YAG. If you want to make a product with stable performance, you should not be fooled by the so-called high brightness. This is a big problem.