CEM - 3 material
- Oct 20, 2018-
Produce double-sided printed circuit board used double-sided coated copper, in addition to the widely used double-sided epoxy glass cloth coated copper, still have a kind of low cost CEM - 3 material, see figure 4.87. Its structure is the original double epoxy resin as base material in glass cloth coated copper thick epoxy glass cloth to make it very thin two chips, at this time due to insufficient strength, while in sandwiched between two thin slices of epoxy glass cloth of epoxy resin glass non-woven fabrics, which reduces the cost.The material of CEM-3 is soft. In addition to being used alone, it can also be used as the core material of multi-layer rigid printed circuit board.