SMT Introduction

- Nov 13, 2018 -

SMT is a surface mount technology (short for Surface Mount Technology) called surface mount or surface mount technology. It is currently the most popular technology and process in the electronics assembly industry.


It is a type of leadless or short lead surface mount component (referred to as SMC/SMD, Chinese called chip component) mounted on the surface of a printed circuit board (PCB) or other substrate surface. Circuit mounting technology for soldering and assembly by means of reflow soldering or dip soldering.


Knowledge of each of the following processes is required:


Printing (red glue / solder paste) --> Inspection (optional AOI automatic or visual inspection) --> Mounting (first paste small device and then paste large devices: high-speed patch and integrated circuit placement) -- >Detection (optional AOI optical/visual inspection)-->Welding (welding by hot air reflow) --> Inspection (can be divided into AOI optical inspection appearance and functional test) --> Maintenance (using tools: welding Table and hot air desoldering station, etc.) --> Sub-board (manual or split machine for cutting).