Continent Electronics

The primary purpose of using SMT stencils is to facilitate placing of a component onto aboard after a coat of solder paste is applied on it. Power stencils help a great deal in cutting down labor costs and lead time by reducing the manual placement of components and are hence considered a boon for mass production of the same PCB.SMT stencils come in two different formats – framed and frameless. Although the framed stencils are more suited for high volume print circuit boards the frameless foils being easily replaceable are preferable for a high mix environment where various PCBs are being manufactured on the very same line. The frameless ones have an added advantage that they need not be permanently glued onto the frame.

The frameless systems are somewhat expensive but the lower replacement costs for the foils and less storage space required in their case make them a worthwhile purchase.

• PCB Framed Stencil Service introduced framed stencils for the SMT semiconductor and solar industries. The fine grade polished SS technology ensures relatively no burrs on the hole walls and a mirror like finish that helps paste flow evenly on the surface. We guarantee an aperture size accuracy of +-5um and positioning accuracy of +- 10um. For boards with fine pitch components we recommend also combining F3 Nano Coating for better throughput.

Advantages

• Use Japanese garde fine grain sheet
• DFM study for all jobs
• Aperture size accuracy of +- 5um and positioning accuracy +-10um