Issue link: https://resources.pcb.cadence.com/i/1545418
10. Keep the Library Current: Active Management, Not Passive Maintenance A library that is built well but not actively maintained becomes inaccurate on the day the supply chain changes, which is every day. Part lifecycle events, compliance updates, lead time shifts, product change notices, and counterfeit alerts happen continuously. A library that reflects conditions from six months ago is not a current library. Automated Updates Instead of manually researching and updating purchasing or supply chain information, synchronize the component database with distributor and supply chain data sources automatically on a defined schedule. What gets automated and how frequently depends on data type: f High-frequency, objective data: quantity on hand, unit price, lead time. Automated daily or more frequently depending on the volatility of the component categories in the library. f Lower-frequency, judgment-required data: lifecycle status, lifecycle risk rating, compliance verification. Reviewed on a defined cycle, typically quarterly or annually, with the review date recorded. Automated flags should surface parts that are overdue for review. Real-time information from distributors, manufacturers, and supply chain aggregators should include: quantity on hand, quantity on order, unit price, manufacturer lead time, distributor lead time, minimum order quantity, and product status. Monitoring for Supply Chain Events Beyond scheduled updates, the library needs a mechanism to surface significant supply chain events that require immediate action: f End-of-life announcements from manufacturers f Last Time Buy notifications and associated purchase windows f Product change notices (PCNs) that affect form, fit, or function f Significant lead time extension beyond the library-stored value f New counterfeit alerts for components in the library from ERAI, GIDEP, or comparable sources When these events occur, the affected parts should be flagged in the library immediately and design teams with active programs using those parts should be notified. The faster a supply chain event is surfaced, the more options remain available: alternate qualification, strategic stock procurement, or design revision, all of which are significantly easier before a build date is imminent. Note: Keeping supply chain data current inside the library means designers are working from the same real-time intelli- gence that procurement and supply chain teams rely on, without anyone having to manually reconcile the two. 11. Govern Access Without Creating Bottlenecks Library governance fails in one of two ways: no access control, where anyone can add or modify parts without review, producing an inconsistent and unverifiable database, or excessive access control, where a single librarian is the bottleneck for every part request and NPI takes weeks. The goal is structured access that places the right level of control at the right level of decision. 15 www.cadence.com Managing Your Component Library for Supply Chain Resilience