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Elementary, Mr. Watson: Rules of Thumb—Guidelines vs. Principles for PCB Design

11/26/2024 | John Watson -- Column: Elementary, Mr. Watson
The infamous "rules of thumb" are simple guidelines that help you make decisions based on experience, not exact facts. They’re like shortcuts we use because they work most of the time. For example, if you want to know if spaghetti is done cooking, a common rule of thumb is to grab a spaghetti strand and throw it against the wall to see if it sticks. I used to do that, except that instead of the wall, I used the ceiling, which drove my mother crazy.

Beyond Design: High-speed Rules of Thumb

11/21/2024 | Barry Olney -- Column: Beyond Design
The idiom “rule of thumb” is often used in electronics design and has its origins in the practice of measuring roughly with one’s thumb. Rules of thumb are easy-to-remember, broadly accurate guides or principles based on practice rather than theory. They are used to help feed our intuition to find a quick solution based on experience. We are often forced to use rules of thumb in PCB design in the absence of expensive analysis tools. We also use them to get quick ballpark figures initially and then fine-tune the numbers with further analysis. We can use rules of thumb as a sanity check to assess whether we are using our tools correctly. In this month’s column, I will present some commonly used and helpful rules for high-speed PCB design.

Material Insight: David Griesel: Career Success Requires Tenacity, Flexibility

10/23/2024 | Dr. Preeya Kuray -- Column: Material Insight
David Griesel, CEO of Sunrise Group, has been in the PCB industry for nearly 50 years. “I didn’t even have a desk when I started,” says David, who, as a fresh college graduate, got his start at Norplex, a company in Wisconsin that made plastic. “At that time, I had no idea what plastic was even about.” But it gave him an opportunity to learn the business from the ground up. He worked in customer service, followed by technical sales and marketing through several iterations of the company, including as Isola. I hope you’ll enjoy this interview with David as much as I did.

FIT Hon Teng Showcases AI Data Center Connectivity and Immersion-Cooled Signal Integrity Solutions at OCP Global Summit 2024

10/21/2024 | Foxconn
FIT Hon Teng, a subsidiary of Hon Hai Precision Industry, will unveil its latest advancements in AI data center connectivity and immersion-cooling technologies at the upcoming 2024 OCP Global Summit.

Elementary, Mr. Watson: The Gooey Centers of Hybrid PCB Designs

10/09/2024 | John Watson -- Column: Elementary, Mr. Watson
Anyone who knows me knows that I have a special relationship with food. Taking a twist on the words of Will Rogers, "I never met a buffet I didn't like." A balanced diet, to me, means having cupcakes in both hands. One of my favorite foods is cheeseburgers. One of my colleagues at Palomar College recently invited me out for a meal, and we ended up in a burger place in San Diego. I wanted to go the conventional and safe route: a double-patty cheeseburger. My friend insisted that I try the restaurant’s special: a peanut butter cheeseburger. “Really?” I told him. “What an interesting combination.” But he insisted I try it, and since I consider myself an adventurous person, I gave it a go.
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