PCB Fan Control and Noise: Cooling Without the Whine 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 fan control and noise gives you a practical…

PCB Rework: A Practical Guide to Repairing Assembled Boards PCB rework is the controlled removal and replacement of a component or the correction of a solder joint on an assembled board. It is a normal part of manufacturing, not a sign that something has gone wrong in design, and every…

Wearable Technology PCB: Design and Manufacturing Constraints A wearable technology PCB is defined by its enclosure rather than by its circuit. The board has to fit a curved or very small space, survive being worn, run from a battery measured in tens of milliamp-hours, and reject the sweat and humidity…

PCB Heat Sink Attachment Process: Getting the Heat Out 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 heat sink attachment process from the perspective of a PCBA…

PCB Fan and Air Flow Design: Moving Air Where It Is Needed 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…

HASL Surface Finish: What It Is and When to Use It HASL, or hot air solder leveling, is the surface finish that most boards received for most of the history of printed circuits. The board is dipped in molten solder, withdrawn, and blasted with hot air to remove the excess…

PCB Color: Green, Black and Blue and What the Choice Affects The color of a circuit board is one of the few specifications a customer notices immediately and one of the last that engineers think about. It is not merely cosmetic: the solder mask pigment changes how the resist cures,…

Camera Module PCB: A Complete Guide Every image a phone captures passes through a board designed specifically to carry it. A camera module PCB is not a general purpose substrate with a sensor attached: it is a tightly constrained interconnect that has to carry a high speed serial link, dissipate…

How to Choose a Consumer Electronics PCB Consumer products put a specific combination of pressures on a board that industrial and automotive designs do not. The enclosure is small, the unit price is negotiated down to cents, and the product still has to work after being dropped, charged in a…

PCB Connector Retention Testing: Making Sure It Stays On 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 connector retention testing gives you a practical advantage…