Issue link: https://resources.pcb.cadence.com/i/1545418
Part Availability Quantity on hand and lead time are both required, not interchangeable. A part may show significant quantity on hand from a single distributor but carry a 40-week manufacturer lead time, meaning that if the available stock is depleted before production ends, the part becomes effectively unavailable. Lead time should be reviewed against the project timeline to confirm parts can be sourced on schedule if the required quantity is not immediately available. Inventory risk and multi-sourcing risk should also be assessed to confirm the component can be sourced from multiple distributors or manufacturers if one source becomes constrained. When QoH looks adequate but lead time is long, plan against lead time. Distributor stock is finite and can be depleted faster than the manufac- turer can replenish it, particularly for components under allocation pressure. Compliance Data The components selected for a design must adhere to the environmental and regulatory standards defined for the project. These requirements need to be reflected at the component level in the library, not assessed after the BOM is compiled. Analyze compliance to the relevant standards for each project, which may include: f RoHS: Restriction of Hazardous Substances f REACH: Registration, Evaluation, Authorization and Restriction of Chemicals f Conflict Minerals: Dodd-Frank Section 1502 reporting requirements f PFAS: Per- and polyfluoroalkyl substances restrictions, increasingly relevant for defense and industrial programs under emerging EU and US regulations f Lead-Free and Halogen-Free where specified by customer or program requirements Counterfeit Risk Counterfeit components are a documented and ongoing threat. Analog ICs represent the most frequently reported counterfeit type, accounting for nearly a third of all suspect parts reported in 2024. Active and readily available parts, not only obsolete or hard-to-source components, make up a significant share of counterfeit reports. This means counterfeit risk applies to mainstream catalog components, not just legacy or specialty parts. Analyze the counterfeit risk level for each component in the library. If counterfeit risk is elevated, source components directly from franchised distributors or from the manufacturer, and document the procurement chain. High counterfeit risk should be visible to designers at the point of part selection so that sourcing requirements are communicated before the component is on the BOM. For programs subject to AS5553 or AS6081 compliance requirements, the library should encode the sourcing restrictions associated with each part's counterfeit risk classification, and the NPI process should include counterfeit risk documentation as a required field before approval. Overall Component Risk A composite component risk rating that combines counterfeit risk, inventory risk, lifecycle risk, and compliance status provides designers and librarians with a single signal for supply chain fitness. This composite rating does not replace individual field assessment, but it surfaces the highest-risk parts in a library quickly and supports triage when a large number of parts require review simultaneously. 14 www.cadence.com Managing Your Component Library for Supply Chain Resilience