Motorola Corporation

Motorola Solutions, Inc.

John M Waldvogel

Herman J Miller

Billy J Van Cannon

Brian R Bielick

In a communication device, a heat sink includes a solderable top surface with multiple upward facing swaging protrusions. A spacer is placed on top of the top surface of the heat sink with locating cut-outs on the spacer aligned with the swaging protrusions. A solder pre form is inserted into an opening in the spacer. The solder pre form includes locating features for alignment with the spacer and the swaging protrusions. The spacer is configured to restrict melted flow from the solder pre form to a defined area of the heat sink top surface. A printed circuit board including cut-outs and input and output connections for inserting a radio frequency device and further including locating holes for aligning the printed circuit board with the swaging protrusions is placed on top of the solder pre form and secured to the heat sink prior to a manufacturing process.

Radio frequency transistor and matching circuit grounding and thermal management apparatus

A method for assembling an electrical circuit apparatus that includes; a substrate having a top side, a ground layer, at least one thermal aperture, and at least one solder aperture; a heat sink; and an adhesive layer for mechanically coupling the heat sink to the ground layer of the substrate, the adhesive layer having at least one aperture wherein aligning the at least one substrate solder aperture with the at least one adhesive layer aperture enables solder wetting in a predetermined area between the heat sink and the ground layer of the substrate.

Electrical circuit apparatus and method for assembling same

An electrical circuit apparatus () that includes: a substrate () having a ground layer (), at least one thermal aperture (), and at least one solder aperture (); a heat sink (); and an adhesive layer () for mechanically coupling the heat sink to the ground layer of the substrate such that at least a portion of the at least one substrate thermal aperture overlaps the heat sink, the adhesive layer having at least one thermal aperture () and at least one solder aperture (), wherein aligning the at least one substrate solder aperture with the at least one adhesive layer solder aperture and aligning the at least one substrate thermal aperture with the at least one adhesive layer thermal aperture enables solder wetting in a predetermined area between the heat sink and the ground layer of the substrate.

Electrical circuit apparatus and methods for assembling same

An electrical circuit apparatus () that includes: a substrate () having a ground layer (), at least one device aperture (), and at least one solder aperture (); a heat sink (); and an adhesive layer () for mechanically coupling the heat sink to the ground layer of the substrate such that at least a portion of the substrate device aperture overlaps the heat sink, the adhesive layer having at least one device aperture and at least one solder aperture, wherein aligning the at least one substrate solder aperture with the at least one adhesive layer solder aperture and aligning the at least one substrate device aperture with the at least one adhesive layer device aperture enables solder wetting in a predetermined area between the heat sink and the ground layer of the substrate.

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Libertyville, IL, United States of America

John M Waldvogel