Final Quality ControlFQC, short for final quality control, is the comprehensive and final inspection of printed circuit boards before shipping to ensure that the boards meet the specifications. Althou...
After all the manufacturing processes of the circuit board have been completed, the electrical test is carried out to check the board for open circuits and short circuits. The two most commonly used t...
The process of PCB profile is to cut the production panel into specific sizes and shapes based on the customer's design requirements. To facilitate PCB assembly, the boards can be profiled in individu...
Bare copper of PCB is easily oxidized by moisture when exposed to air, and the resulting oxide layer of copper has a great impact on the soldering, which may lead to cold soldering and even cause the ...
Legend printing ,also known as Silkscreen, is a process of printing informational texts or patterns on the surface of the board. Legend information includes component reference designators, switch set...
Bare copper has good solderability, but it is easily oxidized by moisture when exposed to air. The oxide layer of copper has a great impact on the soldering. It may lead to cold soldering and even cau...
As a protective layer, the solder mask layer is covered on the traces and substrates that do not need to be soldered to prevent short circuits during soldering. At the same time, it serves to provide ...
AOI - Automatic Optical InspectionDuring the etching process, the etching method, the etching rate, the types and pH value of the etchants, or other factors directly affect the quality of the circuits...
In the previous step, the copper surface is covered with a layer of tin as an etching resist. Now we need to remove the unwanted copper from the surface to obtain the final desired circuits. This proc...
After developing, the copper thickness of the exposed circuits needs to be increased by a secondary copper plating, namely pattern plating. The purpose is to make the hole copper and surface copper of...
In the previous steps, we have completed the creation of all the inner layer circuits and the required holes (Through/Buried/Blind holes). Next, we have to enter the outer layer imaging process of the...
The hole walls after drilling are composed of non-conductive epoxy resin and fiberglass board. In order to connect circuits between different layers, it is necessary to metalize the hole walls through...
To make the circuit of each layer connected, the boards need to go through the drilling process to make the corresponding holes according to the specifications in the drill files. For single and doubl...
Prior to lamination, the surface of inner image layer needs to go through an oxide process (brown oxide or black oxide treatment) to roughen and passivate the copper surface, increase the interaction ...
Surface Pre-TreatmentThe copper sheet after cutting has oxides, grease and other impurities attached to the surface, which firstly needs to be pretreated. The main purpose of pretreatment is to remove...
Planned FeedingAs PCB gets unavoidably scrapped in the actual production process, the factory needs to add an additional proportion of materials to ensure the required quantity of good boards. The add...
All PCB orders need to go through the engineering department before being scheduled for production. Now let's explore what the engineering department does to ensure the smooth production. Checkin...
プリント回路基板の設計の必要性に伴い、直接めっきプロセスは過去数年間継続的に開発されてきました。リード付きコンポーネントから表面実装コンポーネントまでの小型化によって推進され、PCB設計は、より多くのピンを備えた小型コンポーネントに適応するように進化しました。これにより、PCB層が増加し、回路基板が厚くなり、貫通穴が小さくなります。高アスペクト比の課題に対応するために、生産ラインの技術仕様には、超...
The chemical element symbol of nickel is Ni. Because of its excellent physical, mechanical, and chemical properties, nickel has many applications in engineering and industry, such as anti-corrosion, i...