SMT machine: also known as "SMT machine", "Surface Mount System" (Surface Mount System), in the production line, it is configured after the dispensing machine or screen printing machine, is a device to accurately place the Surface Mount components on the PCB pad by moving the Mount head. Divided into manual and automatic two kinds. 

Automatic SMT machine is used to achieve high speed, high precision automatic placement of components equipment, is the whole SMT production of the most critical, the most complex equipment. SMT machine is the main equipment in the production line, SMT machine has been developed from early low speed mechanical SMT machine to high speed optical centering SMT machine, and to multi-function, flexible connection modular development. 

SMD is the abbreviation of Surface Mounted Devices, which includes CHIP, SOP, SOJ, PLCC, LCCC, QFP, BGA, CSP, FC, MCM, etc. SMT is Surface Mount Technology (short for Surface Mount Technology), which is the most popular Technology and process in the electronic assembly industry. 

Surface Mount Technology (SMT) is a new generation of electronic assembly Technology, which compresses traditional electronic components into components with only a few tens of the volume, thus realizing high density, high reliability, miniaturization, low cost and automation of electronic assembly. Such miniaturized components are called SMD devices (or SMC, chip devices). The process of assembling components onto a printed board PCB is called SMT process. The related assembly equipment is called SMT equipment.