Same Dk on paper, very different engineering trade-offs: where RO3010 wins on process and cost, and where the PTFE heritage of RO6010 pays for itself.
In RF and microwave design the substrate choice sets performance, reliability and final cost at the same time. Rogers RO3010 and RO6010 both belong to the ceramic-filled PTFE-composite family and both handle demanding high-frequency work, but their resin systems push them toward different jobs. This comparison looks at what actually separates them, so the decision can be made on requirements.
The difference starts in the formulation.
A simple way to hold the difference: RO6010 is built for performance first, with pure PTFE heritage, while RO3010 balances performance against cost and manufacturability. The Rogers 3000 series sits in the same neighbourhood if you want to see how the rest of that platform is positioned.
Four parameters decide most designs. The table below puts them side by side, and the notes after it explain what each difference actually costs you.
| Parameter | RO3010 | RO6010 |
|---|---|---|
| Composition | Ceramic-filled hydrocarbon / thermoset | Ceramic-filled PTFE |
| Nominal Dk | 10.2 (11.2 on some thicknesses) | 10.2 |
| Df at 10 GHz | ~0.0022 | ~0.0020 |
| Dk over temperature | Good | Negligible change, −50°C to +150°C |
| Z-axis CTE | Relatively higher | Closely matched to copper |
| Processing | Drill, desmear and activate on FR-4-like routes | Requires sodium naphthalene etching or plasma treatment |
| Best fit | Cost-sensitive, complex commercial designs | Wide temperature range, millimeter-wave, high-reliability multilayer |
Dk measures how much electrical energy the material stores, and how steadily it does so matters as much as the value itself.
RO3010’s nominal Dk is 10.2, or 11.2 depending on thickness, and its key trait is minimal change with frequency. Circuit characteristics such as impedance therefore stay consistent across bands, which makes design more predictable. RO6010 is also specified at 10.2, with the same frequency stability, but it adds something RO3010 does not offer: Dk barely moves from −50°C to +150°C. For systems that see wide operating temperature swings — aerospace hardware, outdoor base stations — that is a decisive advantage.
RO3010 measures about 0.0022 at 10 GHz, low enough for most high-performance RF circuits. RO6010 comes in around 0.0020. The gap looks small on paper, and at low frequency it is. At millimeter-wave frequencies the effect widens, because insertion loss accumulates across the whole signal path, and that is where the lower figure starts to matter to the system budget.
CTE governs dimensional stability as temperature moves, and on a plated through-hole it governs reliability.
RO3010 has a relatively higher Z-axis CTE. After repeated thermal cycles — soldering, then power cycling — the plated copper in a via carries more stress, which is where long-term reliability differences begin. RO6010’s Z-axis CTE is closely matched to copper, so the expansion mismatch between substrate and foil is small and the plated barrel sits under far less strain. On a high-reliability multilayer board in a harsh environment, that is usually the argument that settles the choice.
This is where the two part company most visibly, and it shows up in both yield and invoice.
RO3010’s non-pure-PTFE resin system processes much more like a standard epoxy/glass laminate. It can be drilled, desmeared and activated using familiar FR-4 routes, which lowers process difficulty and cost while lifting yield. RO6010, as a pure PTFE material, needs dedicated steps such as sodium naphthalene etching or plasma treatment to activate the hole wall properly. That adds complexity, time and cost. Our processing considerations for high-frequency PCBs cover the principles behind those steps.
If you are comparing across the wider family while you decide, the RO3210 grade and its PTFE counterpart RT6010LM cover the same class of Dk 10.2 materials from slightly different starting points.
RO3010 and RO6010 are both top-tier materials aimed at different requirement levels. RO3010 is the all-rounder: strong high-frequency performance, good manufacturability, competitive price. RO6010 is the specialist: better loss, better temperature stability, better mechanical reliability, at the cost of a higher price and a harder process route.
If the design does not involve extreme temperature variation or millimeter-wave frequencies, RO3010 is the more practical and cost-effective foundation. If the application is mission-critical or pushes at the edge of what is technically achievable, RO6010 is the base you should not compromise on.
Frequently Asked Questions
RO3010 is a ceramic-filled hydrocarbon/thermoset polymer; RO6010 is a ceramic-filled PTFE composite. The resin system drives almost every other difference between them.
RO6010, at about 0.0020 Df at 10 GHz against roughly 0.0022 for RO3010. The gap is small in isolation and more significant at millimeter-wave frequencies.
Its Z-axis CTE is closely matched to copper, so thermal cycling puts far less strain on the plated barrel than the higher-CTE substrate of RO3010 does.
Yes. It can be drilled, desmeared and activated on routes close to standard FR-4, while RO6010 needs dedicated PTFE steps such as sodium naphthalene etching or plasma treatment.
When performance and reliability outweigh cost: phased-array radar, satellite and aerospace electronics, wide temperature ranges, millimeter-wave work, or complex multilayers needing maximum via reliability.
Send us your frequency range, temperature requirements and layer count, and we will tell you which of the two fits.
Get a Fast Quote Fast Reply on WhatsApp