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Fresh PCB Concepts: Cost Stability in a Period of Copper and Gold Volatility

Anyone who works with PCBs in any capacity right now can feel that copper and laminate prices are not stagnant, gold price is increasing even faster, and the impact shows up quickly on PCB quotations. For many design teams, this feels like a force outside their control. Raw materials go up, and the board cost goes with it.

I want to highlight that many of these swings are manageable. A few thoughtful decisions at the design and specification stage can reduce your exposure to commodity noise and create far more predictable PCB pricing over time. None of these steps compromise reliability. They simply remove unnecessary cost traps that have crept into specifications over the years.

Gold usage a Habit, Not a Requirement
Gold is a fantastic material when utilized under the right circumstances. Some benefits are:

• It offers reliable contact performance
• It resists oxidation
• It is essential for specific connectors and high-wear surfaces

The problem is that gold remains in many designs because “that is how we have always done it.”

Every square millimeter of ENIG carries a cost directly linked to the spot price of gold. When those prices rise, boards with large ENIG areas rise with it. The easiest way to protect your cost structure is to stop using gold where it is not required. Critical contact pads, test points, and high wear zones that genuinely need gold should keep it. Everything else may not require it at all.

There are also special cases where designers default to gold out of caution. Wire bond pads are one example. Soft gold is the traditional choice, but ENEPIG can be a very cost-efficient alternative for many bonding applications without sacrificing bond integrity.  We have even seen ENIG used for wire bonding under the right circumstances. The same principle applies to hard gold on touch surfaces. Hard gold is excellent for long-life wear, but many applications with low abrasion or controlled usage can transition to carbon ink with impressive cost savings. For insertion connectors, hard gold is the go-to finish for long-life wear cycles. But for connectors with very low cycle counts, ENIG can be a reliable and significantly more economical choice.

Each of these decisions depends entirely on knowing the true operating conditions of the product. When the use case is well understood, the finish can often be optimized without any compromise to performance. Under the right circumstances, these adjustments become substantial cost reducers.

There is another scenario that deserves attention. RF and microwave designers often lean toward larger than necessary gold areas because they do not want solder mask acting as part of the reference plane. That works electrically, but the cost exposure is significant. A more balanced method is to use an alternate finish that performs well at high frequency or to place solder mask only where it will not influence the impedance structure. Even limited areas of added solder mask can remove a surprising amount of gold area and still keep the electrical environment stable.

When the design allows, finishes like OSP and immersion tin provide excellent solderability and long-term stability at a fraction of the exposure to gold pricing. These finishes are used globally across commercial and industrial markets with great results. The savings add up quickly once even a portion of the board is moved away from ENIG.

If Gold Is Mandatory, Be Deliberate With Surface Area
In some applications, ENIG is unavoidable. But even in those cases, the area can usually be contained. Instead of plating entire copper zones or ground shapes, restrict the gold to the specific functional pads. Decorative gold, full board gold, and oversized keep outs all inflate cost without any performance gain.

Our factory partners see price swings tied to nothing more than an unnecessary plating area. A designer might intend it as an aesthetic or general reliability choice, but it becomes a direct lever tied to daily gold pricing. Pulling that area back to only what is needed is one of the easiest cost stabilizers available.

Copper Choices Matter More Than Many Realize
Copper foil weight and copper distribution also carry significant cost impact during volatility. When copper prices climb, anything that increases copper usage then becomes a multiplier. Many designs default to heavy copper or elevated foil weights across all layers because it feels safer.

Power distribution layers and thermal management layers should be intentional design decisions, not broad defaults. Lower foil weights on signal layers and thoughtful copper balancing help control cost and improve manufacturability. Over-specifying copper is one of the most common and most avoidable cost escalators in the industry.

Material selection works best when the spec focuses on performance rather than brand. Another major cost driver during volatile periods is material rigidity. Drawings that lock in a single laminate brand limit factory flexibility and can push costs up when availability shifts.

A specification that calls for performance requirements rather than brand opens the door to a broader range of approved materials. This improves availability, stabilizes delivery, and often produces a better overall cost structure. It also enables the use of low and mid-Tg materials where they fit the performance requirements. These materials are more stable in pricing and easier to source globally.

There are many cases where high Tg makes sense, but many more where it is unnecessary. Over-specifying Tg has become an invisible cost trend and adjusting it to match real product needs improves stability immediately.

Material Utilization Often Overlooked, Matters More Than You Think
Material cost is not only about the laminate itself. It is also about how efficiently the factory can use that laminate. Board shape, outline complexity, and panel fitting all impact cost in ways many teams never see.

Nonstandard outlines, unusual geometries, and designs that cannot tile cleanly on a production panel force the factory to consume more laminate than the electrical design truly needs. Low utilization means higher cost. The effect grows when designs have large spacing rules, heavy keep out zones, or mandated arrays that do not match efficient panel formats. Every unused square inch of laminate becomes part of the cost of the finished product.

This is also why excessive panelization requirements create unnecessary expense. Mandated arrays that do not match the factory’s panel capabilities drive additional unnecessary waste. When the factory is allowed to propose the panel structure, utilization improves and overall cost drops.

NCAB spends a significant amount of time helping customers understand these invisible material drivers. We offer a cost driver seminar where design teams can study real examples and learn how simple decisions in shape, spacing, and panel structure can dramatically improve efficiency. The goal is not to redesign your product, but to give you the tools to avoid accidental cost additions that add no performance value.

Design Choices That Protect You From Unpredictable Markets
This is not about cutting corners. It is about making intentional choices that put the designer in control of cost drivers instead of at the mercy of commodity markets:

• Gold utilization only where it is truly required
• Alternate finishes where performance allows it
• Reduced plating area when gold is unavoidable
• Copper chosen for real need instead of habit
• Material flexibility instead of brand lock in
• Smarter shapes and panel structures that preserve the laminate you already pay for

Each step is simple on its own. Together they create a strategy that gives your team far greater predictability and a more stable supply chain.

Our engineering teams partner with designers early to review stackups, finishes, materials, and panel strategies before any of these choices lock in. With a global network of partner factories, we see the supply side impacts of copper and gold pricing long before most companies feel them. This perspective allows us to guide customers toward choices that maintain performance and reduce exposure to constant commodity movement.

Early engagement is the key to successful cost mitigation. The sooner we align materials, finishes, and utilization strategies with the needs of the product, the more stable the cost picture becomes.

Jeffrey Beauchamp is a field applications engineer with NCAB Group.