What Causes PCB Failure
Assembly errors are also among the evils that cause failures. Such as the wrong PCB manufacturer, change of materials and layers, will affect the PCB and place an entire project at risk. Additional causes may also be placing the component in backwards, components installed in the wrong place, bent leads, cold solder joints, no solder, solder mask problems, defective, out of tolerance, mismarked components, and a marginal circuit design. These can all lead to PCB failure right out of the gate as well as a lot of aggravation and frustration. Another issue can be circuits that were not validated such as sixteen volts in a twenty-four-volt power supply.
Discrete component failure can occur through the natural aging process, overheating, and electrical surges, risers in ESR values, and corrosion and drying.
Power component failure can occur through aging, electrical surges, and overheating.
Trace damage failure can occur through electrical surges, lightening, inappropriate assembly, and metallic dust.