This kind of packaging has its own unique characteristics, so in some electronic circuits will be applied, such as MP3 player, electronic organ, digital camera, game console, etc. Some low-cost circuits also use this type of package.
In fact, COB soft packaging is not limited to chips, but is also widely used in LED. For example, COB light source is an integrated surface light source technology that is directly attached to an LED chip on a mirrored metal substrate.
COB soft package features
In many cases, this kind of soft packaging technology is actually for cost. As the simplest bare chip mounting, in order to protect the IC inside from damage, this kind of packaging generally requires one-time molding, generally placed on the copper foil surface of the circuit board, with a round shape and black color.
This kind of packaging technology has low cost, space saving, thin, good heat dissipation effect, and the advantages of encapsulation method is simple, a lot of integrated circuit, especially the most low cost circuit, only in this way the integrated circuit chip with wire leads to more, and then to chip on the circuit board manufacturers, the use welding machine is good, then glue curing hardens.
This is a lineup of Chip production process technology, it is the English name of COB (Chip On Board), namely Board Chip packaging, this is one of the bare Chip SMT technology, using epoxy resin to Chip mount On the PCB printed circuit Board, then why some circuit Board without the packaging, the packaging has the characteristics of what?