Ceramic PCB Substrates: Materials, Metallisation and Applications A ceramic PCB swaps the glass-reinforced epoxy that carries most circuits for a sintered ceramic tile, then builds the conductor pattern on top of it. The substrate is the structural element, the insulator and the heat spreader at once, and that single decision…

PTFE PCB: Properties, Grades and Applications Teflon is a trade name that has become a shorthand for a family of materials, and in printed circuit work it usually means a laminate built on polytetrafluoroethylene. The reason it appears in electronics is that PTFE has a combination of properties no ordinary…

PCB 3D AOI for Joints: Seeing the Height of the Solder Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB 3D AOI for joints from the perspective of…

PCB SPI Data Feedback: Closing the Print Loop Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains…

Power Supply PCB Design Cost Drivers: What Raises the Price A power supply PCB costs more than a signal board of similar size, and the difference comes from four design requirements: current, heat, isolation and safety compliance. Each of them changes the fabrication route, and they interact with one another.…

PCB ESD Control on the Line: Where the Charge Goes Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This…

Capacitive PCB: Electrode Design for Touch and Proximity Sensing A capacitive PCB turns the board itself into a sensor. Electrodes are formed in copper on the surface or on an inner layer, and a controller measures the small change in capacitance caused by a finger approaching the electrode. There is…

Semiflex PCB: Rigid Boards With a Controlled Bend Region A Semiflex PCB is a rigid FR-4 board that has been locally thinned so that it can be bent once during assembly. It uses the same materials and the same fabrication sequence as an ordinary multilayer board, which is what makes…

Satellite Communication PCB: Manufacturing and Design Guide A satellite communication terminal is a radio that must work once, in a place where it cannot be repaired, after a launch that subjects it to levels of vibration and acoustic energy that no terrestrial product sees. The board inside it is designed…

UPS Circuit Board: Structure, Function and Design An uninterruptible power supply is a product defined by what it does in the two milliseconds after the mains fails. Everything else, the efficiency, the size, the price, is secondary to the requirement that the load never sees the interruption. The UPS circuit…