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High-speed PCB designs are getting faster and faster. However, as the rate of GB/s increases, so too does the need to pay attention to material properties. Copper roughness, the area where the copper adheres to the laminate, is one of those properties. This 2018 DesignCon Best Paper award-winner describes a technique for increasing simulation accuracy through proper modeling of copper roughness.
This paper was written by Vladimir Dmitriev-Zdorov and Igor Kochikov of Mentor, a Siemens business, and Bert Simonovich of Lamsim Enterprises. To download this paper, click here.
Andy Shaughnessy, Design007 Magazine
Not long ago, I caught up with Carl Schattke, CEO of PCB Product Development LLC and a longtime PCB designer, for his thoughts on “designing in a vacuum.” As Carl points out, if you follow PCB design best practices, knowing the identity of your fabricator is not a “must-have.” He also offers some communication tips for discovering the information you do need, including one old-fashioned technique—just asking for it.
Luca Gautero, SUSS MicroTec
Although I am not a designer by trade, I want to share my thoughts on what additive manufacturing means for designers, especially how it relates to solder mask. In this article, you will learn what topics I feel are the most important to address.
Tomas Chester, Chester Electronic Design
Advances in technology have been clear to see within the component packaging industry, as the ball grid array (BGA) package sizes reduce from 1.0 mm pitch to 0.8 mm, 0.4 mm, and even beyond. However, while these improvements have occurred with component packages, it has become increasingly more difficult to break out and route the dense circuitry associated with these parts. Currently, the high-density interconnect (HDI) method typically used for the breakout of such parts has been to create the smallest possible subtractive-etched traces with microvias to allow for connections and escapes on the innerlayers of your PCB.