A Rogers RT/duroid 5880 PCB uses a low-loss, glass-microfiber-reinforced PTFE laminate for RF and microwave circuits. Its low dielectric constant and dissipation factor support transmission lines, antennas, radar circuits, and RF feed networks where insertion loss, impedance, or phase stability must be controlled.
That does not mean every wireless PCB needs RT/duroid 5880. For short RF traces or less demanding frequencies, FR4 or another RF laminate may offer a better cost-performance balance. The useful question is whether the electrical benefit of RT/duroid 5880 solves a real design constraint.
At EBest Circuit, we support Rogers RT/duroid 5880 PCB prototypes and production builds with stackup review and controlled-impedance fabrication. Send your Gerber or ODB++ files, stackup, impedance requirements, quantity, and test notes to sales@bestpcbs.com for engineering review.
What Is Rogers RT/duroid 5880 PCB?
A Rogers RT/duroid 5880 PCB uses RT/duroid 5880 laminate as part or all of its dielectric structure. Rogers describes the material as a PTFE composite reinforced with randomly oriented glass microfibers.
Unlike standard FR4, the dielectric in an RF PCB is part of the electrical system. Its Dk, thickness, loss tangent, and copper interface affect transmission-line behavior.
RT/duroid 5880 is therefore most useful when the design needs:
- low dielectric loss over RF or microwave signal paths;
- predictable microstrip or stripline impedance;
- phase consistency between RF channels;
- a low-Dk substrate for antenna or transmission-line geometry;
- repeatable high-frequency electrical behavior.
For a simple wireless control board with only a short antenna feed, this performance may be unnecessary. For a microwave network or phase-sensitive antenna circuit, the material can directly affect the finished RF response.
What Are the Key Rogers RT/duroid 5880 Datasheet Specifications?
The Rogers RT duroid 5880 datasheet values below are the properties most relevant to PCB design, stackup planning, and fabrication.
For a broader material-selection framework, see our PCB material guide.
| Property | RT/duroid 5880 Typical Value | Why It Matters |
| Material | Glass-microfiber-reinforced PTFE | Determines RF and processing behavior |
| Process Dk | 2.20 ± 0.02 | Indicates dielectric consistency |
| Design Dk | 2.20 | Used for circuit design and modeling |
| Dissipation factor | 0.0009 at 10 GHz | Affects dielectric insertion loss |
| Moisture absorption | 0.02% | Relevant to environmental stability |
| Thermal conductivity | 0.20 W/m·K | Useful for thermal review |
| CTE X / Y / Z | 31 / 48 / 237 ppm/°C | Important for mechanical and via reliability |
| Density | 2.2 g/cm³ | Relevant to mechanical design |
| Copper peel strength | 5.5 N/mm | Indicates copper adhesion performance |
| Flammability | UL94 V-0 | Material flammability classification |
These are published laminate values, not automatic tolerances for a finished PCB. A fabrication drawing should separately define the requirements that need production control, such as dielectric thickness, copper weight, finished thickness, impedance, and dimensional tolerances.
What Is the Dielectric Constant of Rogers RT/duroid 5880?
The published Rogers RT duroid 5880 dielectric constant is 2.20 ± 0.02 for process Dk, with a design Dk of 2.20.
For an RF designer, Dk affects more than impedance. It also influences:
- signal propagation velocity;
- wavelength inside the PCB;
- microstrip and stripline dimensions;
- resonator dimensions;
- antenna geometry;
- electrical phase length.
If dielectric thickness or Dk changes after layout is completed, a transmission line may no longer meet its original impedance or phase target.
This is why a 50 Ω note on a drawing is not enough for a high-frequency board. The manufacturer should also know the intended laminate thickness, copper thickness, RF structure, and impedance tolerance.
For sensitive microwave circuits, prototype validation is useful even when the nominal Dk is known. Actual performance still reflects the complete transmission structure rather than one datasheet number.
What Is the Loss Tangent of Rogers RT/duroid 5880?
The published Rogers RT duroid 5880 loss tangent, or dissipation factor, is 0.0009 at 10 GHz.
A low Df reduces the dielectric contribution to transmission loss. That becomes more valuable as frequency increases, RF routes become longer, or a design contains multiple cascaded transmission structures.
Typical examples include:
- microwave feed networks;
- RF filters and couplers;
- long antenna feed lines;
- radar channels;
- phase-sensitive RF networks.
Low Df does not eliminate every source of loss. Copper profile, line geometry, connectors, launches, vias, surface finish, and discontinuities still contribute to the total insertion-loss budget.
In practice, there is little value in specifying a very low-loss laminate while leaving the RF stackup or transition geometry poorly controlled.
What Thicknesses Are Available for Rogers RT/duroid 5880 PCB?
Common Rogers RT duroid 5880 thickness options include:
| Nominal Thickness | Metric Equivalent |
| 0.005 in | 0.127 mm |
| 0.010 in | 0.254 mm |
| 0.020 in | 0.508 mm |
| 0.031 in | 0.787 mm |
| 0.062 in | 1.575 mm |
These figures refer to the dielectric laminate thickness, not necessarily the finished PCB thickness. Copper foil, plating, bonding layers, solder mask, and multilayer construction all affect final board thickness.
Thickness also changes RF geometry. For the same impedance target, a different dielectric height usually requires a different trace width.
Before releasing RF artwork, confirm:
- laminate thickness;
- copper thickness;
- impedance target and tolerance;
- intended transmission-line structure;
- manufacturable trace width.
Changing one of these after the layout is frozen can force the RF traces to be redesigned.
Why Is RT/duroid 5880 Used for High-Frequency PCB Designs?
RT/duroid 5880 is attractive when the circuit needs low dielectric loss and predictable RF behavior.
Its main engineering advantages are straightforward:
- Low Dk: supports specific transmission-line and antenna geometries.
- Low Df: reduces dielectric loss at microwave frequencies.
- Good dielectric consistency: useful for impedance and phase-sensitive layouts.
- Low moisture absorption: helps limit electrical changes caused by humidity.
- PTFE-based construction: suited to demanding microwave and broadband circuits.
There is also a practical limit.
If a circuit has short RF paths, relaxed loss requirements, and strong cost pressure, another laminate may be sufficient. RT/duroid 5880 should solve a measurable RF problem rather than simply make the material specification look more advanced.
Where Is Rogers 5880 PCB Commonly Used?
RT/duroid 5880 is commonly associated with RF and microwave circuits where the transmission structure is sensitive to dielectric loss or Dk variation.
Typical applications include:
- microwave antenna feed boards;
- phased-array antenna networks;
- radar front-end circuits;
- point-to-point wireless links;
- satellite communication modules;
- microwave filters and couplers;
- RF test and measurement fixtures;
- aerospace RF assemblies;
- low-loss microstrip and stripline circuits.
The application name alone should not determine material choice. A short 2.4 GHz antenna trace inside a commercial product has very different requirements from a multi-channel microwave array where small phase errors accumulate across many RF paths.
A useful selection question is: what performance parameter becomes unacceptable if a lower-cost laminate is used?
If there is no clear answer, RT/duroid 5880 may be over-specified.
Rogers RT/duroid 5880 vs 5880LZ vs 5870: Which Should You Choose?
These materials belong to the RT/duroid family, but they are not interchangeable.
| Property | RT/duroid 5880 | RT/duroid 5880LZ | RT/duroid 5870 |
| Process Dk | 2.20 ± 0.02 | 2.00 ± 0.04 | 2.33 ± 0.02 |
| Design Dk | 2.20 | 2.00 | 2.33 |
| Df at 10 GHz | 0.0009 | 0.0021 | 0.0012 |
| Density | 2.2 g/cm³ | 1.4 g/cm³ | 2.2 g/cm³ |
| Main Selection Driver | Very low dielectric loss | Low density and low Dk | Low-loss PTFE with higher Dk |
Choose RT/duroid 5880 when very low dielectric loss and a Dk around 2.20 suit the RF design.
Choose 5880LZ when lower weight is a major mechanical requirement. Its lower density can be useful in weight-sensitive aerospace and antenna applications.
Choose 5870 when its 2.33 Dk fits the RF geometry or when an existing design is already qualified around that material.
Do not substitute one for another without recalculating the RF structure. A Dk change can alter impedance, resonant dimensions, and electrical length.
What Design Rules Matter for Rogers RT/duroid 5880 PCB?
The first rule is to design around the real manufacturing stackup, not a generic “Rogers 5880” material label.
Our PCB board stackup guide explains how copper and dielectric layers work together before routing is finalized.
For line-structure tradeoffs, compare the routing guidance in our stripline vs microstrip guide.
For controlled RF lines, review these items together:
- dielectric height;
- trace width;
- copper thickness;
- copper type or profile;
- reference-plane position;
- surrounding dielectric structure;
- impedance tolerance.
RF via transitions also deserve attention. A signal via with nearby ground vias behaves differently from an ordinary low-frequency interconnect. At higher frequencies, launch geometry, anti-pad size, return-current path, and via stub length can affect performance.
For phase-matched channels, equal CAD length alone is not enough. The dielectric environment and transitions along each path should remain as similar as practical.
It is also useful to confirm material availability before freezing the layout. If the final production dielectric thickness differs from the value used in simulation, controlled-impedance traces may need to be resized.
What Should Be Controlled During RT/duroid 5880 PCB Fabrication?
RT/duroid 5880 is a PTFE-based material, so it cannot simply be processed as if it were standard FR4.
The main fabrication controls are:
| Process | Key Control |
| Material handling | Prevent scratches, dents, contamination, and distortion |
| Surface preparation | Avoid aggressive abrasion on soft PTFE laminate |
| Drilling | Control drill condition, feed, speed, stack height, and tool life |
| Hole-wall treatment | Prepare PTFE surfaces correctly before metallization |
| Plating | Maintain reliable adhesion and hole-wall coverage |
| Etching | Control finished RF trace width |
| Routing | Support the softer laminate during machining |
| Lamination | Match bonding system and press process to the stackup |
| Inspection | Verify dimensions, continuity, impedance, and critical RF geometry |
Drilling and hole-wall treatment deserve particular attention because PTFE behaves differently from epoxy-glass material. Poor processing can create smear, plating adhesion problems, or dimensional issues around drilled features.
Etching accuracy matters as well. A trace that is electrically critical should be controlled according to its finished width, not merely the CAD artwork dimension.
For prototype projects, we can review the proposed stackup, copper specification, via construction, impedance requirement, and mechanical features before fabrication. This is especially useful when an RF simulation moves into its first physical build.
What Affects Rogers RT/duroid 5880 PCB Price?
There is no useful universal Rogers RT/duroid 5880 PCB price because laminate cost is only one part of the finished board.
The main quotation variables are:
- Laminate thickness: uncommon constructions may cost more or take longer to source.
- Copper type and weight: rolled copper, ED copper, and different copper weights affect material cost.
- Board size and panel utilization: irregular shapes can waste expensive laminate.
- Layer count: multilayer and hybrid boards require additional lamination and registration control.
- Impedance tolerance: tighter limits may require coupons and additional verification.
- Hole structure: dense PTH patterns, small holes, cavities, or slots increase process complexity.
- Mechanical tolerances: tighter dimensions can reduce yield.
- Quantity: prototype setup costs are spread across fewer boards.
- Testing: impedance measurement, electrical test, and extra inspection add cost.
A cheaper quotation is only meaningful when both suppliers are pricing the same construction.
Before comparing prices, check that the quoted material, dielectric thickness, copper weight, finished thickness, impedance tolerance, test scope, and quantity are identical.
What Information Is Needed for a Rogers RT/duroid 5880 PCB Quote?
A complete RFQ saves time and reduces assumptions during stackup review.
For an accurate quotation, provide:
- Gerber, ODB++, or equivalent manufacturing files;
- fabrication drawing;
- board dimensions;
- layer count;
- RT/duroid material designation;
- dielectric thickness or proposed stackup;
- finished PCB thickness;
- copper type and weight;
- controlled-impedance targets and tolerance;
- minimum finished hole size;
- surface finish;
- special routing, slot, cavity, or edge-plating requirements;
- testing requirements;
- prototype and production quantities.
If the stackup has not been finalized, state that clearly. The manufacturer can then propose a practical construction before the RF layout is locked.
A request such as “4-layer Rogers 5880 PCB, 50 Ω” leaves several important variables unresolved. Adding dielectric spacing, copper weight, RF layer location, impedance tolerance, board size, and quantity makes both engineering review and quotation much more reliable.
FAQs About Rogers RT/duroid 5880 PCB
Is Rogers RT/duroid 5880 a PTFE material?
Yes. RT/duroid 5880 is a glass-microfiber-reinforced PTFE laminate designed for high-frequency circuits. Its construction is different from standard FR4 epoxy-glass material.
Is Rogers 5880 suitable for millimeter-wave PCB designs?
It can be used for millimeter-wave designs where its low dielectric loss and Dk characteristics suit the circuit. At these frequencies, however, copper profile, connector launches, vias, line geometry, and fabrication tolerance also become critical.
Can RT/duroid 5880 be used in multilayer or hybrid PCBs?
Yes. It can be used as selected RF layers in multilayer or hybrid constructions. The bonding system and adjacent dielectric materials should be included in the RF stackup model where they influence the transmission structure.
Hybrid construction can also reduce the amount of premium RF laminate used when only part of the PCB requires very low dielectric loss.
What Is the Difference Between Rogers 5880 and FR4?
RT/duroid 5880 is a PTFE-based high-frequency laminate with a design Dk of 2.20 and a published Df of 0.0009 at 10 GHz. FR4 is an epoxy-glass material family designed for much broader general-purpose PCB use.
FR4 usually provides a lower-cost manufacturing route. RT/duroid 5880 becomes attractive when low RF loss, stable dielectric behavior, or specific high-frequency geometry justifies its higher material and processing cost.
Is RT/duroid 5880 the Same as 5880LZ?
No. RT/duroid 5880 and 5880LZ are separate materials.
5880 has a design Dk of 2.20 and Df of 0.0009 at 10 GHz. 5880LZ has a lower Dk and substantially lower density, making it useful when board weight is an important design constraint.
They should not be substituted without reviewing impedance, electrical length, antenna geometry, and mechanical requirements.
How Can EBest Circuit Support Your Rogers RT/duroid 5880 PCB Project?
Rogers RT/duroid 5880 makes sense when its low dielectric loss and 2.20 Dk solve a genuine RF problem. The laminate is only part of the result; dielectric thickness, copper, line geometry, drilling, PTFE processing, lamination, and impedance control all influence the finished PCB.
At EBest Circuit, we support high-frequency PCB stackup review, controlled-impedance fabrication, prototypes, and production. Send us your Gerber or ODB++ files, target stackup, RT/duroid 5880 thickness and tolerance, copper specification, impedance targets, surface finish, quantity, and test requirements for engineering review and quotation.
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