Printed circuit, the board is abbreviated as PCB, also known as printed circuit board. It is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a "printing" circuit board.

 

The application of printed circuit boards began in 1936 and was first applied to radio installations, which began to be used on a large scale in the 1950s. After more than 80 years of development, PCB products have been widely used in various terminal fields of the electronics industry, such as consumer electronics, automotive electronics, communication terminals, medical equipment, industrial equipment, aerospace, military and other fields.

 

The soldering operation of printed circuit boards always has the problem of bad solder joints, and this kind of problem has been endless. It seems that there will always be new problems.