At present, there are two kinds of circuit boards for LED lamps, one is aluminum substrate, and the other is glass soldering board. Next, I will analyze the difference between the aluminum substrate of the LED lamp and the fiberglass board for you.
First, let's introduce the fiberglass board: in order to gain an advantage in price, some manufacturers use glass brazing board as the PCB board for LED lights. According to different materials and production processes, glass fiberglass boards can also be subdivided into fiberglass boards, double-sided copper foil stripping boards, perforated glass copper foil fiberglass boards, and single-sided copper foil fiberglass boards.
Due to these factors, the price of LED tubes will be directly affected. There is also a cost-saving approach at the expense of heat dissipation, which is to directly lay out the circuit on the glass solder plate. The LED tube made of the above circuit boards will be cheaper than the aluminum substrate in price, but the heat dissipation effect is not as good as that of the aluminum substrate. Or you can check which material is better for LED radiator
Aluminum substrate: From the manufacturing structure, it can be divided into three layers, the top is the circuit board layer, the middle is the heat conduction and insulation layer, and the bottom is the aluminum base layer. At present, most LED T8 tubes use this kind of circuit board.
The circuit board layer generally uses copper foil as the conductive circuit. The conductivity of copper is very good, but the price of copper is also very expensive. In order to save some costs, some manufacturers make the copper foil thinner, so the conductivity is also affected. The price of the thermal and insulating layer varies greatly due to different materials. If you want to have very good thermal conductivity and insulation, you can use a special ceramic polymer, but this material is very expensive, and it is difficult for many manufacturers to accept it.
So they are looking for cheaper other materials to reduce costs, for example epoxy resin and glass cloth are commonly used. The aluminum base layer can be made of copper plate and aluminum plate. The heat dissipation effect of the copper plate is very good, and the cost will be very high. Therefore, aluminum plates are generally used to make aluminum substrates. The requirement is that the aluminum plates must have good heat conduction and cannot be easily bent.
In summary, the biggest natural enemy of LED is heat dissipation, so it must be a substrate with a relatively high heat dissipation coefficient, which conducts heat quickly and dissipates heat quickly. Aluminum substrate is good and heat dissipation is good; but the price of aluminum substrate is more expensive than fiberglass board, and LED lamps need enough Heat dissipation to ensure luminous efficiency. So aluminum substrate is the first choice.
