smt processing technicians are responsible for maintaining the placement machine, and some should be programmed to paste on the motherboard.
smt is a surface assembly technology, which is a more popular technology and process in the electronic assembly industry. smt processing It is a kind of pin-free or short lead or ball array package of surface assembly components (referred to as SMC/SMD, Chinese called chip components) installed on the surface of the Printed Circuit Board (PCB) or other substrate surface, Circuit assembly by welding by reflow or dip welding.
smt processing process:
SMT basic process components include: screen printing (or dispensing), mounting (curing), reflow welding, cleaning, testing, repair
1. Screen printing: Its role is to leak the solder paste or patch glue onto the solder pad of the PCB to prepare for the welding of components. The equipment used is a screen printing machine (screen printing machine), located at the front of the SMT production line.
2, dispensing: it is the glue drops to the fixed position of the PCB board, its main role is to fix the components to the PCB board. The equipment used is a dispensing machine, which is located at the front of the SMT processing line or behind the testing equipment.
3, mounting: Its role is to accurately install the surface assembly components to the fixed position of the PCB. The equipment used is the SMT machine, which is located behind the screen printing machine in the SMT production line.
4, curing: its role is to melt the patch glue, so that the surface assembly components and PCB board firmly bonded together. The equipment used is the curing furnace, which is located behind the SMT machine in the SMT production line.