Miniature rework stencils are laser cut solder paste stencils designed to replicate the initial manufacturing process for a select area. These lasers cut mini stencils can be “flap-less” or have integral flaps in order to prevent neighboring areas from getting solder paste on them as well as to hold them.
Mini stencils are laser cut stencils custom-made for your own printed circuit boards using your part drawings from the part data sheet, Gerber or CAD files. These mini solder paste stencils were specially designed for manual printing using a mini squeegee which we can also supply. They are made from a high quality, high nickel content stainless steel which will give you the best possible solder paste release properties. These are available in thicknesses from 2-20mils and can be mechanically configured to fit different holding systems. With the deep experience BEST has with PCB rework and repair processes we can provide the BEST possible aperture configurations and geometries based on the type of solder paste and flux chemistry bing used.
BEST has developed a line of film-based rework stencils that can be placed in to tight areas of the board. These single use , adhesive-backed stencils with the trade-name StikNPeel™ have made the rework printing process much easier. These stencils can be fitted in to tight areas as they made from flexible film. The re-position able adhesive system prevents older from “leaching” underneath the stencil.
In order to see the differences in performance between the mini metal and plastic rework stencil performance, find a study here comparing their consistency in print volume and height. If you would like to see an analysis of the pluses and minuses of both the mini metal stencils versus the adhesive-backed plastic film flex stencils why invite you to view our recorded webinar here.