The Chinese name of PCB is printed circuit board, also known as printed circuit board, is an important electronic component, so what is the basic process of PCB production? The following xiaobian will take you to understand.

Basic process of PCB manufacture

The basic process of PCB manufacturing is as follows: inner circuit → lamination → drilling → hole metallization → outer dry film → outer circuit → screen printing → surface process → post-process

The inner line

The main process is cutting → pretreatment → film pressing → exposure →DES→ punching.

laminated

The copper foil, semi-cured sheet and browned inner circuit board are pressed to synthesize multilayer board.

drilling

PCB layer to generate through hole, can achieve connectivity between layers.

Hole metallization

Metallization of the non-conductor part on the hole can make the electroplating process more convenient.

The outer dry film

The required circuit is exposed on the dry film by graphic transfer technique.

The outer line

The purpose is to make the copper plating to the thickness required by the customer, complete the line shape required by the customer.

Screen printing

The protective layer of the outer circuit, used to ensure the insulation, protection board, welding resistance of PCB.

After the process

Finish machining according to customer’s requirements and conduct testing to ensure final quality audit.