An SMT solder paste stencil meters paste onto PCB pads before component placement. A useful stencil RFQ includes the paste-layer data, board/panel reference, foil requirements and printer or frame interface. Aperture design must match the component and printing process; copying every copper pad at 1:1 is not a universal rule.

A halogen-free PCB request should identify the required material definition, laminate grade and supporting documentation. A bare-board material claim does not automatically establish the status of every component or the complete assembled product. Define the scope before comparing supplier quotations.