Stencil Material
High-precision metal foils provide the primary medium for transferring solder paste onto printed circuit boards during surface mount assembly. Utilizing laser cut stainless steel for stencil fabrication ensures that aperture walls are smooth and have a slight taper to facilitate excellent paste release. The automated fiber laser cuts dense pad geometries with high dimensional accuracy and repeatable patterns across the entire foil surface.
This material offers superior wear resistance and durability compared to nickel or plastic alternatives. It provides the mechanical strength needed to maintain aperture dimensions over thousands of squeegee cycles without stretching.
Aperture Fidelity
Precise apertures are required to ensure that solder paste does not bleed or bridge during the printing process. When fabricators utilize laser cut stainless steel, the thermal energy of the laser beam is controlled to prevent warping or burr formation on the foil. This precision is necessary for fine-pitch ball grid arrays and quad flat pack components.
Production Longevity
Squeegee blades run across the stencil thousands of times during a high-volume manufacturing run. Choosing laser cut stainless steel prevents the apertures from stretching or distorting under the mechanical pressure of the squeegee. This durability minimizes the need for stencil replacement, ensuring consistent solder deposits from the start of the production batch to the end.
