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Driving Sustainability in PCB Design
April 24, 2025 | Marcy LaRont, I-Connect007Estimated reading time: 4 minutes

Filbert (Fil) Arzola is an electrical engineer at Raytheon. He’s smart, entertaining, and passionate about PCB design. As it turns out, he’s also passionate about “Mother Earth,” as he calls her. Born and raised in Southern California, he freely admits that he turns the water off when he brushes his teeth and yells at his brother for throwing batteries in the garbage. But when looking at the issue of sustainability and PCB design—and, more broadly, the manufacture and disposal of electronic devices—he urges his audiences to ponder what sustainability looks like. Can PCB designers, he asks, make any impact on sustainability at all?
At IPC APEX EXPO, Fil addressed this topic in his Professional Development Courses presentation, “Adapting and Engineering Model-Based PCB Design in Step with Sustainability and Digital Twin.”
“We constantly want more and more in our technology. So how can technology be sustainable?” he asked. Enter “digital twin,” and a “make it right the first time” approach making multiple build revisions of PCBs unnecessary.
Fil provided a working definition of sustainability for PCB design as “a technical effort to save design production schedule, materials and assembly while reducing labor costs and waste,” stating, “This is how we do sustainability in PCB design. Today, we can build using digital twin and build 10 boards instead of hundreds of boards.”
Though resistance to investment in the software and tools required to create things like digital twins solely for the sake of sustainability are consistently raised by most companies, Fil says we simply can’t afford to. Fil’s focus was on creating a mindset of awareness and a thoughtful consideration of looking at all products that we build and consume in terms of sustainability, from design to product use to landfill—if that is their unfortunate destination (which it usually is).
“Material selection is the main driver for responsible design sustainability,” Fil said about PCB design. To be more environmentally sustainable, he says we need to have a default for rigid laminate and FR-4 (epoxy) material. He ranked the different material types, from polyimide to PTFE to flex, by cost. Raytheon, he said, has tried to stick to the same board material for all that they do to be more sustainable when it comes to cost, supply chain, and time.
Fil talked about vias, submitting that the more vias a board design has, the more drill bits the fabricator will go through, which is not as environmentally sustainable. “The point is, if you have vias on your board, use them wisely,” he said. “If you can use a 1 to 4 via instead of a 1 to 6 and save drill bits, do that.” Of course, this takes some knowledge of the PCB fab process, and again, a sensitivity toward a much bigger picture when designing a PCB. He also mentioned designing for assembly with chips that you are able to remove instead of scrapping an entire board if the chip is bad. It’s more sustainable both in use of materials and it saves a lot of money. Of course, swapping chips out may not be on the table, but it is worth asking the question and being fully aware of the options.
This presentation taught me that Fil is something an environmental sustainability activist. Though he seems to have an outdated idea of how dirty PCB shops are (a personal pet peeve), I admire that he aims to make meaningful changes in electronics manufacturing. Working in the very traditional mindset of the aerospace industry, the endeavor to make change cannot an easy one to fulfill. He says he is committed to changing mindsets and making meaningful change in electronics manufacturing. He wants to use his voice and his knowledge, and maybe even his money, if it comes down to it.
In a sidebar, Fil mentioned that he has been fortunate to have four great bosses, the first of whom told him emphatically that he wouldn’t just design boards, but he would learn everything he could about mechanical and thermal engineering. This has served him well for his entire career and has also helped him to see the process more holistically and completely.
As he wrapped up this presentation, Fil noted that the U.S. is way behind in its sustainability efforts in comparison to our European counterparts, and reminded the audience that it really is up to them, as designers, to make change happen by using their voices. A few of the suggestions he gave to do this included: “Think inside the box,” “Develop and unite in parallel electrical and mechanical model integration,” and “Drive responsible sustainable design engineering guidelines into their PCB design methodologies now.”
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