1. What is COB soft packaging
If you are careful, you may find that there is a black thing on some circuit boards, so what is this thing? Why is it on the circuit board, and what is its function? In fact, this is a kind of package, which we often call " "Soft package", it is said that soft package is actually for "hard", its composition material is epoxy resin, we usually see the receiving surface of the receiving head is also this material, inside it is a chip IC, this process is called It is called "bonding", and we usually call it "binding".
This is a wire bonding process in the chip production process. Its English name is COB (Chip On Board), that is, chip on board packaging. This is one of the bare chip mounting technologies. It uses epoxy resin to mount the chip It is installed on the HDI PCB printed circuit board, so why some circuit boards do not have this package, and what are the characteristics of this package?
2. Features of COB soft packaging
This kind of soft packaging technology is often for cost. As the simplest bare chip mounting, in order to protect the internal IC from damage, this kind of packaging generally requires one-time molding. It is usually placed on the copper foil surface of the circuit board. It is round and black in color. This packaging technology has the advantages of low cost, space saving, light and thin, good heat dissipation effect, and simple packaging method. Many int