What is Inspection Lot
An inspection lot in the PCB industry refers to a specific quantity or batch of PCBs that are selected for inspection and testing to ensure that they meet the required quality standards. The size and composition of an inspection lot can vary depending on factors such as the size of the order and the complexity of the PCBs being produced.
The creation of an inspection lot typically occurs after the completion of the PCB assembly process, which involves stages such as component placement, soldering, and cleaning. Once the assembly process is finished, a representative sample of the batch is chosen for inspection.
During the inspection process, each PCB in the lot is visually examined for any defects or issues that may affect its functionality or reliability. This includes checking for misaligned components, solder bridges, and other soldering defects. In addition to visual inspection, the PCBs may undergo various tests, such as electrical, functional, and environmental, depending on the order’s specific requirements.
Creating an inspection lot ensures that the PCBs meet the required quality standards before they are shipped to the customer. By inspecting and testing a representative sample of the batch, manufacturers can identify and address any defects or issues that may be present, preventing them from affecting the entire order.
The selection of an inspection lot is based on various criteria, including the number of PCBs produced, the production process used, the time period of production, and the type of defects observed during production. These criteria help manufacturers focus their inspection efforts on areas where defects are more likely to occur or where potential issues may have been introduced during production.