High Quality Pcb Power Bank Pcb

How does PCB assembly work?

24hours for 4 layer PCB

1. Preparation of copper clad sheet, epoxy resin sheet is one of the most used sheets. 2. Drill holes in the copper clad board and make them according to the position of the specification drawing. 3. Electroplating, connect the hole with chemical copper. In this way, the circuits on both sides can be connected as a whole. 4. Make a circuit on the copper board. It is also called pattern transfer, which is to remove excess copper and make copper wires on the copper surface according to the designed line direction. Then do solder mask. Also called solder mask, it has the function of protecting the circuit and the board. 6. Characters, also called texts, are used to identify PCB Mixed Assembly components. Open the desktop computer to see such a board with text. It is the Flame resistant PCB. After it is made, the size needs to be defined. Now comes the cutting process, also called forming. 8. The PCB board is cut into small pieces. It is necessary to test the performance of his electrical appliances. Whether it can be turned on. Whether it is valid after power-on. 9. In order to make the communication PCB board that passed the test, it is necessary to conduct an appearance inspection to see if there are any defects. 10. The finished product is packaged, boxed and shipped.