There are very big differences in the scenes, products, performance, materials, area, etc.
pcb board of PCB boards when they are used, resulting in very big changes in the types of components used in different PCB boards, the thickness of the connection lines, and the wiring density. So, what factors need to be considered when choosing PCB board?
1. For general electronic products, use FR4 epoxy glass fiber substrate; for high ambient temperature or flexible circuit boards, use polyimide glass fiber substrate; for high-frequency boards, you need to use polytetrafluoroethylene Glass fiber substrate; for electronic products with high heat dissipation requirements, metal substrates should be used.
2. Plates with higher glass transition temperature (Tg) should be selected appropriately, and the Tg value should be higher than the circuit operating temperature.
3. The coefficient of thermal expansion (CTE) of the sheet is required to be low.
4. High heat resistance of the board is required. Generally, PCBs are required to have a heat resistance of 250°C/50S.
5. The flatness of the plate is required to be good.
6. In terms of electrical performance, for high-frequency circuit boards, materials with high dielectric constant and low dielectric loss are required, including insulation resistance, voltage strength, and arc resistance to meet product requirements.
The above are the factors that should be considered when selecting PCB plates. I believe that after customers and friends understand,
quick turn pcb they can be targeted when selecting plates in the future.
The Wall