Are control plans developed to the...and/or material....level?
Control plans are required at the system, subsystem, component, and/or material level. Suppliers may not need a separate and distinct control plan for components such as wafers, gases, and chemicals. However, existing control plans must cover receiving through shipment of materials, parts, components, and assemblies. So in effect, supplier's control plans will include wafers, gases, and chemicals. The Semiconductor Supplement supports this!