Issue link: https://resources.pcb.cadence.com/i/1545331
Traditionally when selecting components, engineers focus on achieving the desired circuit functionality and performance. Their methods for part selection often include pulling from manufacturer or distributor websites, datasheets, or previous designs and consolidating basic parametrics (part number, values, and manufacturer). However, the main causes of BOM rejection are based on a completely different set of criteria. Therefore, it is ideal to include this data as part of the component selection process. This information is even more important as the electronics supply chain has become highly dynamic due to: Technological Advancements Industries such as automotive and medical must adapt to cutting-edge technological advancements. As a result, once optional systems are now standard — creating high demand on specific parts, while others become obsolete. Increased Regulations New and improved regulations are instated as the market moves toward a more sustainable, lead-free environment. Mergers and Acquisitions Once a company completes their merger, they re-assess their product lines, discontinues certain items, and creates new ones. This results in an ever-changing marketplace with unpredictable conditions. Component Shortages The global pandemic had lasting effects on the electronic supply chain. While things are returning to normal component shortages are still prevalent. These changes in the supply chain can lead to unsuccessful part purchasing and BOM rejection due to: By understanding these issues, critical supply chain information can be reviewed and analyzed during the part selection process to help you achieve an orderable BOM on the first pass. Part Status Example: Part lifecycle is changed due to technological advancements meaning the part you selected may not be available for purchase for the lifecycle of your intended product. Part Availability Example: The required part, which was available at the start of the project, may not be available when the PCB is ready for production. Adherence to Standards Example: Selecting a component that contains lead when the project requires lead-free. Counterfeit Parts Example: Sometimes counterfeit parts won't be recognized until product assembly; however, risk can be mitigated to guarantee the quality and performance of your product. Part Selection - Not Just Any Part Will Do 4 www.cadence.com