Conductive Anodic Filament: Design Rules and Process Limits A board that passes every inspection and every electrical test can still fail in the field from a mechanism that grows after it is installed. Conductive anodic filament is the name for that mechanism, and it is worth understanding because its symptoms…

Hall Effect Sensor Interface Design A Hall effect sensor converts a magnetic field into an electrical signal without contact, which makes it the natural choice for position, speed and current measurement in equipment that has to run for years. The device itself is simple, but the interface around it decides…

Solder Mask Bridges and the LDI Process A solder mask bridge is the narrow strip of mask that remains between two adjacent pads after imaging and development. Its purpose is to stop solder from bridging the pads during reflow, which makes it a functional feature rather than a cosmetic one.…

PCB PA Matching Network: Turning the Load 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 PA matching network gives you a practical advantage when you…

PCB RF Shielding Between Stages: A Wall in the Signal Path 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.…

PCB Attenuator Design: Losing Power on Purpose 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…

PCB Microstrip Design: A Line on the Surface 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 microstrip design gives you a practical advantage when you…

Common PCB Design Mistakes and How to Avoid Them Most board problems that reach production are not exotic. They are the same short list of mistakes, repeated across companies and across products, and almost all of them are avoidable with a review process that looks for them deliberately. A layout…

PCB Power Amplifier Thermal: Heat Under the Output 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…

Moisture Sensitivity Level: Design Rules and Process Limits A reel of components that has been open on the shop floor for a week is not the same material it was when the seal was broken. The plastic package has absorbed moisture from the air, and when the assembly enters reflow…