This brief translates recurring sourcing and production questions into RFQ and approval checkpoints. Project decisions should use the final model specification, applicable standard and current supplier evidence.
The approved sample is a configuration, not just a shape. Control component, material, process, firmware and factory changes through evidence-based approval.
Approve a controlled configuration
A golden sample is useful, but appearance cannot reveal relay rating, heater alloy, insulation density, fan motor, coating formulation or firmware. The approved baseline should include drawings, bill of materials, critical-component list, specifications, software revision, packaging and certification documents.
Define changes that require notice
Supplier, factory, tooling, material, formulation, dimensions, ratings, software, process parameters, test equipment and packaging changes can affect safety, performance or compliance. The agreement should require notice before implementation and identify who approves each risk level.
Use a risk-based verification matrix
A color change may need appearance and material review; a fan change can require airflow, noise, temperature and endurance testing; a relay change can affect safety, reliability and certification. Do not rerun every test blindly, but do document why each test is or is not repeated.
Preserve traceability
Purchase orders and production records should identify the approved revision. Retain incoming lots for critical parts, end-of-line results and deviation approvals. When field issues appear, traceability lets the team isolate affected production instead of treating every shipment as suspect. Packaging changes also deserve review: ISTA states that product, package and process changes can trigger retesting.
Key takeaways
Quick checklist
Strengthening supplier change control?
We can help turn the approved sample into a traceable production baseline.