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Managing Your Component Library for Supply Chain Resilience

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f Manufacturer lead time confirmed directly, not inferred from distributor stock. Distributor lead time reflects what is in their warehouse. Manufacturer lead time reflects how long replenishment takes if that stock is depleted. f Counterfeit risk assessment f Compliance status for all applicable standards: RoHS, REACH, conflict minerals, PFAS where applicable, halogen-free where required f Alternate source assessment: identify whether single-source status is a market reality, where no functional equivalent exists from another manufacturer, or a design choice, where an alternate exists but has not been evaluated. Market-reality single-source parts require a supply risk note. Design-choice single-source parts require either alternate qualification or a documented mitigation strategy such as strategic stock or last-time-buy planning. f Footprint verification against the manufacturer recommended land pattern per IPC-7351. Verification should account for the intended assembly process since recommended land patterns may differ between reflow, wave, and hand soldering applications. Keeping Designers Unblocked During Review NPI review takes time. Designers cannot wait for full verification before proceeding with a schematic. Temporary parts allow a placeholder to be used in the design environment while the request is under review. The part cannot be included in a released BOM until it is fully approved, but the designer is not blocked from continuing layout work. Automatic notifications keep the process moving without manual follow-up. A notification to the librarian when a request is submitted, and a notification to the designer when it is approved or returned with comments, eliminates the status-check overhead that makes NPI feel slow even when the actual review time is reasonable. Reducing Data Entry Errors Manual data entry is the primary source of errors in a component library. Part numbers get transposed, descriptions are inconsistent, and parametric data gets copied incorrectly from datasheets. Automated data entry, where part attributes are pulled directly from distributor and manufacturer data at the time of part creation, eliminates these transcription errors. At minimum, automate the population of: manufacturer name, manufacturer part number, description, package, distributor part numbers, current pricing, and availability. Require manual verification for lifecycle status and compliance data where judgment about source data quality is needed. Pre-built CAD models from a verified source can accelerate model creation for high pin-count or complex components. When a pre-built symbol, footprint, or 3D model is used, the librarian/engineer should verify it against the manufacturer datasheet before associating it with the part record. A CAD model in the library is only as trustworthy as its last verification. 11 www.cadence.com Managing Your Component Library for Supply Chain Resilience

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