Design007 Magazine

PCBD-Sept2017

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September 2017 • The PCB Design Magazine 73 5 Orange Co. Designers Council Meeting Focuses on Embedded Passives On July 19, the Orange County Chapter of the IPC Designer's Council hosted a lunch-and-learn meet- ing in Tustin to discuss the benefits of embedded passives. Approximately 40 people were in atten- dance, which was lighter turnout than usual, most likely because of summer vacations. But the crowd was an enthusiastic one, as usual. 6 Stephen V. Chavez Talks Mil/Aero PCB Design "Steph," as he likes to be called, is also the vice president of his local IPC Designers Council chapter in Phoenix, a CID instruc- tor with EPTAC, and a De- signers Council Executive Board member at large. And each year at IPC APEX EXPO, he's a regular speaker during the Design Forum event. So, for our mil/aero issue, I wanted to get Steph's insight into PCB design at a leading defense contractor. 7 ACDi Hires PCB Design Engineer Priya Sherke Priya Sherke has spent the past five years with progressive growth at Sanstar Microsys- tems in Nagpur, India where she was responsible for PCB design, switching mode power supply design, security sys- tems design and technical support for process and field instruments. She is also skilled in testing, and analysis of SMPS, as well as project co-ordination. She holds a bachelor's degree in electronics and telecommunications from Nagpur University and earned a diploma in software testing from SEED Infotech. 8 Whose Fault is That Bad Board? Not long ago, I answered Editor Andy Shaughnessy's "Whose Fault is That Bad Board?" sur- vey. When I answered the first question ("If a board fails in the field, whose fault is it, typical- ly?"), I was disappointed that he used radio buttons instead of check boxes. I did not want to blame only the designer for every bad board in the world. 9 Nine Dot Connects Webinar: What Qualifies a Circuit as High Speed? Technologists at Nine Dot Connects have been asked the following question many times: "What's the frequency in which a design is considered to be high speed?" Would it surprise you to know that a 10 MHz design which could be wire wrapped or placed on a protoboard could constitute high speed? The fact is, frequency is only a part of the story. J Beyond Design: Transmission Line Losses As digital systems evolve and de- mand for new technology push- es the envelope for smaller and faster systems, transmission line losses, previously considered to be negligible, are becoming a primary design concern. Prag- matic effects such as frequency-dependent losses come into play at clock frequencies above 1 GHz and are of particular concern for fast rise time sig- nals, with long trace lengths, such as multigigabit serial links. PCBDesign007.com for the latest circuit design news and information—anywhere, anytime.

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