What are the steps of the SMT production line process?

SMT is a surface assembly technology, which is a new generation of electronic assembly technology developed on the basis of hybrid integrated circuit technology. Today we will introduce the total number of steps of SMT production line process.

ZX-680S Full Automatic High-speed Piece Inserting Machie (4)
ZX-680S Full Automatic High-speed Piece Inserting Machie (5)

The process flow of SMT production line can be summarized as:

Printing (red glue / solder paste) --▷ "inspection (optional SPI automatic or visual inspection) --▷"placement (first paste small devices and then paste large devices: high-speed Chip placement machine + multi-function IC placement machine) --▷"inspection (optional AOI automatic optical or visual inspection) --▷ " (red glue curing) --▷ "reflow soldering (using hot air reflow soldering for surface mount components welding) --▷ "inspection ( (can be divided into AOI optical inspection appearance and functional test inspection)--▷ "repair (using tools: soldering table and hot air desoldering table, etc.) --▷ "plug-in (through-hole components automatic plug-in or manual plug-in)--▷ "wave soldering (using wave soldering for through-hole plug-in welding) --▷ "cleaning --▷ "inspection (optional AOI automatic optical or visual inspection) --▷ "repair (using tools: soldering table and hot air Desoldering table, etc.)--▷ "Separation of boards (manual or separating board machine for separation of boards) --▷" Testing (can be divided into ICT in-line testing and FCT functional test testing)--▷" Maintenance (using tools: soldering table and hot air desoldering table, etc.)

The above is the SMT placement process steps, as a new generation of assembly technology in the manufacture of electronic products, each step of it is the same as PCB production, with strict and fine features, I hope this article can provide you with some reference.


Post time: Oct-22-2022