PCB Peelable Mask Application: Practical Process Controls 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 PCB…

Polarity Component Orientation and Reverse Placement Control A reversed component is almost never the fault of the placement machine. Integrated circuits, diodes, tantalum capacitors and some light emitting diodes all have a defined mounting direction, and when one of them is placed the wrong way round the consequences range from…

PCB Pre-treatment Before Plating: From Design to Repeatable Production 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…

Smart Home Gateway PCBA Assembly and Module Test A smart home gateway is not an ordinary control board. It has to connect sensors, switches, locks, lighting and other terminals, so the board carries a processor, memory, a communication module, a network connector, the power conversion and an antenna interface at…

PCB Hole Tolerance: How Close the Drill Comes 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…

PCB Fabrication Lead Time: Standard and Expedited Schedules A PCB fabrication lead time only means something when the board type, the process and the quantity are attached to it. A two layer prototype and a ten layer board with buried vias are not on the same clock, so a single…

PCB Edge Quality Requirements: A Practical Manufacturing Guide 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…

PCB Board Thickness Selection: A Practical Manufacturing Guide 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 board thickness selection from the perspective of a PCBA factory floor,…

Security Camera Main Board PCBA Assembly A camera main board has to handle three things at once: the image, the network and the power. It carries a processor, memory, the network interface, the power conversion, the image sensor interface and the control circuit for the infra-red illumination, and the assembly…

PCB Panel Array Layout: Making the Best Use of Space Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB panel array layout gives you a practical…