High quality of PCB design or layout will take much convenience to PCB fabrication & manufacturing process, and improve the ratability of the SMT assembly The guidelines shown here are focused in a few key points that will help you with routing, manufacturability, basic signal integrity, and PCB assembly. 1. The spacing size between SMD … Continued
PCB surface finishing technology When surface finish (also called surface coating) defined to a PCB it means an intermetallic joint between the exposed bare copper of the solder-able area of the circuit board and the electronic components, this excluding the area of solder mask. Printed circuit boards without a protective coating would be susceptible to … Continued
Specifically, both specification of the IPC-A-6012 and the IPC-A-600 are guiding documents made for the bare printed circuit boards. IPC-A-600: is a specification and document for the inspection criteria of PCB, which is a the visual representation of the IPC-A-6012 document. IPC-A-6012: is a guiding document for the PCB manufacturing process. IPC-A-610: is a guiding document for the acceptability of … Continued
Introduction: There are general discussions on the laminated structure of multi-layer printed circuit boards, and most PCB factories have relevant training about this knowledge, which have thoroughly and clearly explained various laminated stackup’s structures and principles. In this article we are mostly focusing on discussing the advantage and it’s weakness of the common 4 layers … Continued
A conformal coating is a type of thin polymeric film applied to a PCB (printed circuit board) by machine or by manual in order to have the electronic PCB boards and its components to be protected from the environment and corrosion. Normally, the film is applied at typical thickness of 25-250µm and ‘conforms’ to the shape of … Continued
When it comes to talk about PCBs (printed circuit boards), nearly it is impossible to get a fixed answer that how many layers you can have. Some IC test mainboards even have nearly a hundred layers in their construction; but, the most consuming electronic products only have common layered PCBs usually from two to four … Continued
PCB assembly process is based on the production data of PCB design and specification of PCB fabrication. Excellent PCB design will facilitate subsequent PCB assembly processing, while incomplete design will affect the processing process and even affect the quality of the final PCB assembly product. So what are the PCB design factors that will affect … Continued
PCB thermal dissipation so important to make it’s electrical device works properly,but how to make the PCB more dexterous? (The electrical energy consumed by electronic equipment during operation, such as radio frequency power amplifiers, FPGA chips, and power products, some of is working needed, but most of which is converted into heat and dissipated) 1. … Continued
Within any simple electronic devices we used nowadays, there is a PCB (printed circuit board) drive it to run. The PCB is the core component of the electronic devices, whether it is a consume product such as battery charger, the communication equipment such as mobile phone, or transportation tool such as vehicle, even it is … Continued
What is back drilling or controlled depth drilling in PCB? PCB Back drilling is one of the special controlled depth drilling (NPTH) in the loop of PCB manufacturing process. Normally, there will be various challenges in engineering and production when it comes to PCB design and printed circuit board manufacturing and one of them is … Continued