The difference of led lamp bead bracket material:

At present, there are aluminum brackets, brass brackets, copper brackets, etc. on the market. Aluminum brackets and copper brackets are expensive, and the price difference is 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.

The difference between the chip size of led lamp beads:

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 LED chip, the brighter it is. We can compare the size of the LED chip by calculating the chip area, such as 23X10, led light The area of the bead chip is 230 square mils. It is a good way to use the area of the LED lamp bead chip to distinguish the size of the chip.

The difference of led lamp bead welding wire material:

The led lamp bead chip and the led lamp bead bracket are connected by gold wire welding method to complete the electrode connection. At present, there are two kinds of alloy wire and pure gold wire on the market. Pure gold wire, gold wire is divided into 0.7, 0.9, 1.0, 1.2, etc. , The thicker the gold wire, the lower the heat group and the longer the life. All you need to know about the material and diameter of the gold wire.

The difference between led lamp bead phosphors:

The white light LED lamp bead is made of blue light chip and yellow phosphor. The phosphor is mainly divided into aluminate and silicate. The performance of aluminate is better than that of silicate. The representative of aluminate is YAG, which has stable performance. , low light decay, the chemical stability of silicate itself is poor, but the brightness is higher than YAG, if you want to make a product with stable performance, don't be fooled by the so-called high brightness, this is a big problem.

The difference of led lamp bead glue:

The phosphor powder is to be mixed with glue and then placed on the chip. The quality of the glue affects the light decay and color drift. The poor glue will yellow over a long time, and the light decay will increase. The good glue is jelly glue.