System and method for providing uniform solder jiunt height for printed circuit boards and their assemblies
AssigneeDell USA, L.P.
InventorsJames S. Bell, Gita Khadem, Joseph A. Vivio
Life of this patent
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AssigneeDell USA, L.P.
InventorsJames S. Bell, Gita Khadem, Joseph A. Vivio
Estimating the term…
There is disclosed a technique for constructing a printed circuit board assembly to provide solder joints with a uniform height. A solder mask is provided on the external surfaces of the printed circuit board to minimize the mount of conductive pad area that is exposed to solder. The solder mask includes a plurality of relatively small openings with a predetermined pattern to minimize the build up of solder, while insuring sufficient solder height to connect to the grounding component located on the chassis to insure adequate EMI protection. Preferably a polka dot pattern is used for certain conductive pads, while a single narrow strip or the solder mask opening configuration is used for rectangular pad configurations. Other configurations and patterns are also available to provide an adequate electrical connection while insuring uniform solder height.
A printed wire assembly for a personal computer, wherein said printed wire assembly connects to the chassis of said computer by a mounting screw or mounting hook, said printed wire assembly including both surface mounted components and through hole mounted components, said printed wire assembly comprising:
A printed circuit board assembly which is installed through the use of a grounding fastener, comprising:
A PC board on which surface mounted components are placed;
Dependencies are inferred from the claim text.