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SEPTEMBER 2026 I I-CONNECT007 MAGAZINE 47 applications. But in high-power, high-temperature, or high-reliability environments, they often reach their limits. Advanced substrate technologies, particularly ceramic-based systems, offer signifi- cant advantages: • Superior thermal conductivity • Better dimensional stability across tempera- ture ranges • Improved resistance to environmental stress But the key is not simply choosing a "better" mate- rial. It's choosing the right material for the applica- tion. Reliability comes from alignment between material properties and real-world conditions. Design for Manufacturability (DFM) vs. Design for Reliability (DFR) Every engineer knows DFM. It's important and en- sures your product can be built efficiently and con- sistently. But the issue is that DFM is not the same as design for reliability (DFR). In fact, they can some- times be in tension. A design that is easy to manufacture may not be optimized for long-term durability. Conversely, a design that maximizes reliability may require tighter controls, more advanced processes, or different materials. Too often, teams prioritize manufactur- ability because it's immediately visible in yield, cost, and throughput. Reliability, on the other hand, is deferred. It shows up later in the field. The best designs balance both, but they never sacrifice reliability for short-term manufacturing convenience because field failures are always more expensive than factory challenges. Early Collaboration Is a Competitive Edge One of the simplest and most underutilized ways to improve reliability is to involve your manufactur- ing partner early. Manufacturers bring a different perspective. They see patterns in designs, materi- als, and failure modes that individual engineering teams may not. They understand how materials behave in real production environments and know where processes introduce variability. They've seen what works—and what doesn't—over time. Early collaboration turns that knowledge into a design advantage, because instead of discovering problems in testing, you prevent them in design. That's not just better engineering. That's faster time to market, lower cost, and higher confidence. Reducing Field Failures Before They Happen Ultimately, DFR is about eliminating surprises. You can't control every variable in the field, but you can control how your design responds to them. That means anticipating thermal cycles, not just peak temperatures, managing mechanical stress, not just electrical performance, selecting mate- rials based on lifetime behavior, not initial cost, designing interfaces that tolerate movement, not resist it, and most importantly, it means thinking beyond the first success. A prototype that works is not a reliable product, and a product that survives testing is not neces- sarily a durable one. True reliability is proven over time, but it is created at the start. Final Thought: Reliability Is a Choice Reliability is not an accident. It's not a byproduct of good engineering, and it's certainly not something you can bolt on at the end. It is a series of delib- erate decisions about materials, design, collabora- tion, and priorities. Engineers don't fail because they lack skill, but because they underestimate how early reliability decisions must be made. If you want to design for high reliability, start sooner. Choose materials with intent, design for the real world, not just the sche- matic. Collaborate early, and never assume you can fix it later. In high-reliability electronics, later is usually too late, and the future you're powering depends on getting it right the first time. I-CONNECT007 Brian Buyea is president of Remtec Inc. To read past columns, click here. P OW E R I N G T H E F U T U R E