Nxp Usa, Inc.

Hamdan Ismail

Audel Sanchez

David James Dougherty

Jerry Lynn White

Frank Danaher

Aruna Manoharan

Mahesh K Shah

Lu Li

Samy R N Naidu

Overmolded microelectronic packages containing knurled base flanges are provided, as are methods for producing the same. In various embodiments, the overmolded microelectronic package includes a molded package body, at least one microelectronic device contained in the molded package body, and a base flange to which the molded package body is bonded. The base flange includes, in turn, a flange frontside contacted by the molded package body, a device attachment region located on the flange frontside and to which the at least one microelectronic is mounted, and a knurled surface region. The knurled surface region includes a first plurality of trenches formed in the base flange and arranged in a first repeating geometric pattern. The molded package body extends or projects into the first plurality of trenches to decrease the likelihood of delamination of the molded package body from the base flange.

Overmolded microelectronic packages containing knurled flanges and methods for the production thereof

A semiconductor device package includes an isolation wall located between a first circuit and a second circuit on a substrate. The isolation wall is configured to reduce inductive coupling between the first and second circuits during operation of the semiconductor device. Encapsulation material covers the substrate, first and second circuits, and the isolation wall. The isolation wall has features, such as indentation, along its upper edge that facilitate a flow of the encapsulation material across the isolation wall during fabrication to largely eliminate interior defects and/or visual defects on the surface of the completed semiconductor device package. For a dual-path amplifier, such as a Doherty power amplifier, the isolation wall separates the carrier amplifier elements from the peaking amplifier elements included within the semiconductor device package.

Semiconductor package with isolation wall

Growing community of inventors

Seremban, Malaysia

Hamdan Ismail