1, fr-4 plate is a kind of epoxy plate, with high mechanical properties and dielectric properties, good heat resistance and moisture resistance, and good mechanical processing.
2. Aluminum substrate is a kind of metal base copper clad plate with good heat dissipation function. Generally, a single panel is composed of three layers, namely, circuit layer (copper foil), insulation layer and metal base layer.Aluminum substrate is often used in LED lighting products.There are two sides, the white side is the welding LED pin, the other side shows the aluminum color, generally will be coated with thermal coagulation and thermal conductivity part contact.
3, FPC board is a polyimide or polyester film as the substrate is made of a high degree of reliability, excellent flexible printed circuit board.It has the characteristics of high wiring density, light weight, thin thickness and good bending.For mobile phones, hard drives and other high-end products.
PCBA substrates are selected differently depending on the use of the product. Generally, the more high-end the product, the more advanced and expensive the PCBA substrates are.