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Specialty Stencils

 

Wafer Bump Electroform Stencils

Wafer Bump Electroform stencils for printing solder paste on wafers is a cost-effective wafer bumping alternative to the conventional sputtering and plating methods. Wafer Bumping Electroformed stencils are used to print solder paste directly onto the pads of the wafer. Read more ...

BGA Ball Placement Tooling

Photo Stencil first pioneered the manufacturing of trapezoidal apertures through chemical etching. As a leading innovator in application development, Photo Stencil designs an aperture that is shaped much like a cone which utilizes a vacuum that can hold solder balls in place without having them pass through the plate. Photo Stencil's use of Alloy 42, plus polishing and nickel plate ensure proper gasketing of the solder ball and plate, preventing leaks and loss of vacuum pressure. Read more ...

Wafer Ball Placement Tooling

BGA ball placement at the wafer level has gained popularity and acceptance in recent years. Ball Placement Delivery Systems vary in sophistication from a simple brush sweeping balls into apertures in the Stencil Placement Tool to devoted stencil printing machines with a selfcontained ball delivery head. As the delivery system sweeps over the Ball Placement Stencil, BGA balls fill the apertures and are transferred to the wafer when the wafer separates from the Stencil Placement Tool. Read more ...

Metal Glue Reservoir Stencils

Metal Glue Reservoir stencil for printing of glue on the backside of PCBs. It is much faster and more cost effective than dispensing glue. It also provides a tighter distribution of glue volume and glue height compared to dispensing. Applications include printing solder paste followed by printing glue on the back side of a PCB for attaching chip components only to the PCB prior to wave soldering or reflow. Read more ...

Other Available Specialty Stencils

Substrate Bumping Stencil - contact us for more details at info@photostencil.com.

Paste and Liquid Flux Stencil - contact us for more details at info@photostencil.com.