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SMT Stencil Manufacturer Guide: Frameless vs Framed Stencils

Compare SMT stencil types, thickness options, nano coating, and what affects solder paste release quality.

A solder paste stencil affects assembly yield more than many buyers realize. Good aperture quality and the right thickness improve paste release and reduce soldering defects.

Frameless vs framed

  • Frameless: lower cost, flexible, prototype-friendly
  • Framed: better for repeat production and printer setup speed

Thickness matters

Stencil thickness must match component pitch and paste volume needs. Fine-pitch boards often benefit from thinner stencils or step stencils.

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