China's electronics manufacturing services (EMS) have been picked up as a common solution for world-wide companies concerning electronic products. Nevertheless, it has to be accepted that China's electronics manufacturers have been also blamed for low quality, inaccuracies or extreme low reliability.
The laminated panel is now ready for outer-layer processing. As during inner-layer processing, photoresist film is applied to each side, and the panels undergo either film or laser direct imaging. Inner layers that are typically negative images, but outer layer imaging is done with positive ones. This is because the circuit image on the photoresist is developed away, leaving the circuit copper exposed for plating.
Conformal coating is a type of coating with special ingredients, used to protect circuit boards and concerning equipment from erosion finally to prolong products' shelf life and guarantee Printed Circuit Boards' (PCBs) security and reliability. Conformal coating features high capability withstanding high temperature and low temperature.
Due to development trend of aerospace products including light weight, miniaturization, multifunction and assembly densification, higher requirement has been set up for Printed Circuit Board (PCB) technology and manufacturing process. Flexible PCBs are a type of circuit boards that are made of flexible substrate material and feature more advantages than ordinarily rigid PCBs:
Electroplating is a process that uses an electric current to reduce dissolved metal cations so that they form a thin coherent metal coating on an electrode. The term is also used for electrical oxidation of anions on to a solid substrate, as in the formation of silver chloride on silver wire to make silver/silver-chloride electrodes.
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As a type of classical inspection technology in recent years, AOI (Automated Optical Inspection) has developed at such a high speed that AOI equipment has been widely applied for SMT (Surface Mount Technology) PCB (Printed Circuit Board) assembly. AOI works to capture images through a rotating camera that will automatically scan PCB and then comparison will be made between tested solder joints and eligible parameters in database.
Printed Circuit Board Assembly (PCBA) allows for tight bonding between bare PCBs and electronic components so that corresponding electrical functions will be fully implemented to finally contribute its own role to the reliable performance of electronic products it'll work in.
The aluminum substrate is a metal-based copper clad laminate with good heat dissipation function. Generally, the single panel is composed of a three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal base layer. Also used for high-end use is designed as a double panel, the structure is circuit layer, insulation layer, aluminum base, insulation layer, circuit layer.
Altium Limited (formerly known as Protel until 2001) is an American, Australian-domiciled owned public software company that provides PC-based electronics design software for engineers who design printed circuit boards. Founded as Protel Systems Pty Ltd in Tasmania, Australia in 1985, Altium now has regional headquarters in the United States, Australia, China, Europe, and Japan, with resellers in all other major markets.