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A New Materials Paradigm
As you’ll see in this month’s issue of Design007 Magazine, slash sheets such as IPC-4101/126 were never meant to be used by designers when comparing PCB laminates. These documents were created to facilitate communication between purchasing and customer service departments. You could say that slash sheets are made for administrative purposes, not engineering.
As the captain said in 'Cool Hand Luke,' “What we’ve got here is a failure to communicate.” IPC does offer several design guidelines, created specifically for PCB designers, including one just for flexible circuits. But there isn’t such a guideline for high-speed designs.
Our expert contributors examined the development of IPC slash sheets and suggest that there is a need for new, robust material guidelines created specifically for PCB designers.
We also discuss the dangers of over-specifying materials, particularly for offshore manufacturing, as well as the many risks and trade-offs associated with laminate selection.
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Mike Morando, PFC
While the layout of the circuit gives us much of the electrical characteristics of the design, your choice of materials can affect the mechanical and electrical characteristics of the circuit. Material choices affect not only the design of the circuit for its environment, but also the manufacturing and assembly processes. While the layout of the circuit gives us much of the electrical characteristics of the design, your choice of materials can affect the mechanical and electrical characteristics of the circuit.
I-Connect007 Editorial Team
Columnist Kelly Dack has had a pretty wide range of experiences. As a PCB designer, he has sat behind the desk at an NPI company, an OEM, a fabricator, and now an EMS provider. We asked him to share a few thoughts on the materials selection process and how it could be improved.
Expanding its avenues of content delivery, I-Connect007 is excited to announce the launch of our latest educational product, On the Line with.., available on Spotify, Apple and all the major podcast platforms. In this podcast, we speak with industry experts to get the latest insights and perspectives on the most relevant topics in the electronics industry today.