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46 DESIGN007 MAGAZINE I MAY 2023 and spacing below industry standards for any given copper weight: • ½ ounce copper: 0.003"/0.003" • 1 ounce copper: 0.004"/0.004" • Ultra high-density interconnects • Sub 1 mil line/space (25 and 15 micron) Understanding the cost drivers in PCB fab- rication and early engagement between the designer and the fabricator are crucial ele- ments that lead to cost-effective design suc- cess. Following your fabricator's DFM guide- lines is the first place to start. DESIGN007 Anaya Vardya is president and CEO of American Standard Circuits; co-author of The Printed Circuit Designer's Guide to… Fundamentals of RF/Microwave PCBs and Flex and Rigid-Flex Fundamentals; and author of Thermal Management: A Fabrica- tor's Perspective. Visit to download these and other educational titles. He also co-authored "Fundamentals of Printed Circuit Board Technologies" and provides a discussion of flex and rigid flex PCBs at RealTime with… American Standard Circuits.

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