The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2001
Filed:
Jun. 08, 1998
Vivek Amir Jairazbhoy, Farmington Hills, MI (US);
Richard Keith McMillan, Dearborn, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
There is disclosed herein a printed circuit board (PCB) having improved resistance against solder bridging and component decentering/tombstoning. The printed circuit board (PCB) includes a substrate,having a top surface,; at least two mounting pads,disposed on the top surface in matched relation with terminations,of an electronic component,; and a solder mask,disposed on the top surface and having at least two apertures,therethrough, wherein each aperture generally conforms in shape with and is arranged about a respective one of the mounting pads,. Each aperture,has at least one inner aperture edge,generally within a projected footprint F of the electronic component and at least one outer aperture edge,generally outside the footprint F. Each aperture,includes a notch,in one or more of the at least one outer aperture edge,, wherein each notch,extends generally outward from its respective mounting pad,. The notch,provides a reservoir in the solder mask aperture,about each pad,, into which flux, other solder paste effluents, and solder balls may be channeled and remain contained.