Classify by machine brand and model. Generally speaking, the feeders used by different brands of surface mounters are not the same, but the same brand with different models can usually be used interchangeably. Its function is to install SMD surface mount components on the feeder, and the feeder provides components for the surface mounter to perform the mounting. For example, if a PCB needs to mount 10 types of components, then 10 feeders are needed to install the components and provide them for the surface mounter. Its role is to supply the rolled material to the surface mount head, and the suction tip of the mounting head accurately and conveniently picks up the electronic components. The feeder is not a standard component in the surface mounter and needs to be purchased separately. It is an important part of the surface mounter and the surface mount process.