How to Choose PCB Copper Clad Laminated
The basic material of PCB board is called base material, also called copper clad laminate. Components will generate heat when working, so the material of the PCB board must have the characteristics of heat resistant. Even if there is a fire, it must have the characteristics of being able to extinguish itself. So how to choose PCB copper clad laminate? This degree of flame resistance is divided into grades, which can be divided into FR-1 to FR-5. The most commonly used one is grade FR-4 epoxy fiberglass cloth copper clad laminate, which is split into a "sandwich" structure, with copper foil on top and bottom and a prepreg in the middle. Among them, prepreg is commonly known as adhesive pad. It is made by drying fiberglass cloth through a gluing machine to the "B" stage, that is, the prepreg is in a soluble and meltable state and will be used to directly press copper clad laminates. Choosing copper clad laminat...