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In Solder Rework/Repair, Solder Training and Tools

StencilMask™

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StencilMask™

 

 

 

Does it take you hours to repair solder mask that has been damaged underneath a BGA as you have to “touchup” all of the area manually? Is there consistently 15-20 minutes of work required to repair mask that has damaged in the same area on many boards? Tired of throwing away boards where the mask damage has been too extensive to make the repair process worthwhile?

StencilMask™ is a unique process which makes the job of repairing the damaged mask site locations much faster. Start by slowly peeling off the backing material of the custom made stencil. Next place the StencilMask™ on the PCB after aligning it over the select area. Solder mask is then rolled in to the apertures on the stencil. Depending on the cure method, whether that be in an oven for a thermal cure or in the presence of a UV light source, the mask material is cured. After curing the stencil is peeled off exposing the select area with the replaced solder mask.

This novel mask repair technique reduces the time required to repair large areas of mask damage on printed circuit boards. Firstly, the skill of the operator required to perform these larger and more complex areas of repair is lessened. Secondly, the entire area requiring repair is assured of getting the replacement mask applied as all of the work is done on the front on the stencil design. The stencil film thickness determines and maximizes the thickness while at the same time assuring that a consistent thickness is applied to the PCB. Best of all this a major time saving technique reducing some BGA site repair techniques from the better part of half a day to 15 minutes or less. Don’t take out word for it…see it yourself!

The mask stencils are packaged in groups of (3) stencils up to 60 x 60mm square. These stencils are ordered and engineered similar to SMT stencils whereby the GERBER files drive the design. After modifying the GERBER files to only include the areas where the mask repair needs to be performed, the acceptance files are sent back to you for approval. Within a 48 hours thereafter the stencils will be shipped.

Want to know more? We're just a friendly phone call away... 847.797.9250

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