A system for mounting a component in an aperture of a supporting surface has a mounting flange surrounding the component to be mounted, and at least two clamp dogs attached to the mounting flange and located adjacent a rear surface of the mounting flange. The method of forming the semiconductor structure includes etching an undercut in a substrate material under one or more gate structures while protecting an implant with a liner material. Other embodiments include switching battery chargers that modify the battery current based on sensed circuit conditions such as battery voltage or input current to the switching regulator. ; that impact a qualitative nature of a document.