In the fast-paced world of electronics manufacturing, even the smallest component can make or break a product's success. For mid-sized electronics manufacturer TechNova Electronics, this reality hit close to home when their medical device PCBs began failing in the field—all due to inadequate protection from environmental factors. What followed was a journey to find a coating partner that could deliver reliability, compliance, and precision. This case study explores how TechNova navigated challenges, evaluated options, and ultimately selected a partner that transformed their production process.
TechNova Electronics, based in Austin, Texas, specializes in developing portable medical monitors used in hospitals and clinics worldwide. These devices are designed to withstand harsh environments—think constant exposure to cleaning chemicals, moisture, and temperature fluctuations. At the heart of each monitor is a printed circuit board (PCB) packed with sensitive components, from microcontrollers to sensors. For these PCBs, protection isn't optional; it's a matter of patient safety.
"Our monitors are often used in emergency rooms, where spills and humidity are part of daily life," explains Maria Gonzalez, TechNova's Senior Production Manager. "A single PCB failure could delay critical patient data, which is why we needed a coating solution that didn't just meet standards—it exceeded them."
Initially, TechNova relied on conformal coating, a thin polymeric film applied to PCBs to shield components from moisture, dust, and corrosion. But as their product line expanded to include more complex devices with tighter component spacing, they realized conformal coating alone wasn't enough. Some components, like connectors and delicate sensors, required a more robust solution: low pressure molding, a process that encapsulates parts in a durable plastic shell. The challenge? Finding a partner that could handle both conformal coating and low pressure molding, while aligning with their strict compliance needs and tight production timelines.
TechNova's first coating partner was a local firm with a reputation for quick turnaround. At first, the relationship worked. But as production volumes increased, cracks began to show. "We started noticing inconsistencies in the conformal coating thickness," Gonzalez recalls. "Some boards had thick, uneven layers that interfered with component fit, while others were so thin they offered no protection at all."
The issues escalated when an audit revealed the supplier was cutting corners on RoHS compliance —a non-negotiable for TechNova, whose products are sold in the EU. "We found traces of lead in some batches, which could have resulted in massive recalls," Gonzalez says. To make matters worse, delivery delays became routine, throwing off TechNova's assembly schedules and straining relationships with their own clients.
By early 2024, TechNova's leadership team knew a change was urgent. "We needed more than just a coating vendor—we needed a strategic partner," says CEO Raj Patel. "Someone who understood medical device requirements, could handle both conformal coating and low pressure molding, and integrate seamlessly with our turnkey SMT PCB assembly process. And above all, they had to be reliable."
TechNova's search for a new coating partner began with a clear checklist. After analyzing their pain points, the team outlined non-negotiable criteria:
With these criteria in hand, TechNova's procurement team began researching suppliers. They reached out to 12 companies—eight local, four international—including several based in Shenzhen, China, a hub for electronics manufacturing. "We were hesitant about offshore partners at first," Patel admits. "But the Shenzhen firms had the scale and specialized equipment we couldn't find locally. We decided to keep an open mind."
After initial screenings, TechNova narrowed the list to three finalists: a local ISO-certified firm, a European supplier with medical experience, and a Shenzhen-based company called PrecisionCoat Solutions. Over six weeks, the team conducted virtual audits, requested sample coatings, and grilled each candidate on their processes.
The local firm impressed with their proximity but fell short on low pressure molding experience. The European supplier had stellar compliance credentials but quoted lead times twice as long as TechNova's deadlines. Then there was PrecisionCoat.
"PrecisionCoat stood out from the start," Gonzalez says. "Their facility tour showed state-of-the-art automated conformal coating machines with vision systems to ensure uniform application. For low pressure molding, they used precision tools that could encapsulate components as small as 0.5mm without damaging them. And their commitment to RoHS compliance was evident—they provided batch-specific test reports and even invited us to audit their material suppliers."
Another selling point? PrecisionCoat offered a one-stop solution, integrating coating with their existing turnkey SMT PCB assembly service . "Instead of shipping PCBs to a separate coating facility, we could send them directly from assembly to coating, cutting transit time by 70%," Gonzalez explains.
| Criteria | Local Supplier (Previous) | European Supplier | PrecisionCoat Solutions |
|---|---|---|---|
| ISO 13485 Certified | No | Yes | Yes |
| RoHS 2.0 Compliant | Partial (Non-compliant batches found) | Yes | Yes (Batch-specific reports) |
| Low Pressure Molding Experience | No | Yes (Limited to large components) | Yes (Specialized in micro-components) |
| Turnkey SMT Integration | No | Yes (High cost) | Yes (Seamless workflow) |
| Lead Time (Prototype to Production) | 14 days (Inconsistent) | 28 days | 10 days |
In March 2024, TechNova signed a three-year contract with PrecisionCoat Solutions. The onboarding process began with a deep dive into TechNova's PCBs. PrecisionCoat's engineering team visited TechNova's facility to study their designs, identifying areas where conformal coating alone would suffice and where low pressure molding was necessary. "They didn't just take our files and start coating—they collaborated with our design team to optimize the process," Gonzalez says. "For example, they suggested adjusting component placement on one PCB to make conformal coating more effective, which saved us time and material costs."
The first production run was a test: 500 PCBs for TechNova's flagship heart rate monitor. PrecisionCoat applied a silicone conformal coating to the main PCB and low pressure molding to the device's sensor port, a high-risk area for moisture ingress. The results were striking. "The coating thickness was consistent across all 500 boards—within ±5 microns of our spec," Gonzalez notes. "And the low pressure molding had zero defects, with perfect adhesion to the housing."
Testing confirmed the quality. PrecisionCoat's in-house lab conducted humidity testing (85°C/85% RH for 1,000 hours), thermal cycling (-40°C to 85°C), and chemical resistance tests (exposure to isopropyl alcohol and disinfectants). All boards passed with no signs of delamination or corrosion.
Six months into the partnership, the impact was clear. TechNova tracked key metrics to measure success:
"Working with PrecisionCoat has been transformative. They don't just coat our boards—they protect our reputation. When a hospital in Berlin told us their TechNova monitor had been running flawlessly for 18 months in a high-humidity OR, that's when we knew we'd made the right choice." — Raj Patel, CEO, TechNova Electronics
TechNova's journey offers valuable insights for other electronics manufacturers seeking coating partners. Here are the key takeaways:
For TechNova Electronics, choosing the right coating partner wasn't just about fixing a production problem. It was about building a relationship that would support their growth and commitment to quality. PrecisionCoat Solutions proved to be more than a vendor; they became an extension of TechNova's team, offering expertise, reliability, and peace of mind.
In an industry where precision and protection are everything, the right coating partner isn't just a cost center—they're a competitive advantage. As Patel puts it: "Your PCB coating is the last line of defense between your components and the real world. Choose your partner wisely, and they'll help you build products that stand the test of time."
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