Compare Rogers RT/duroid 5870 and RT/duroid 5880 high frequency PCB materials. Learn the differences in dielectric constant, loss tangent, thermal stability, applications, and PCB manufacturing considerations for radar, satellite communication, aerospace, and millimeter-wave designs.
https://szxcepcb.com/product/rogers-5880-gold-plated-pcb/
RT/duroid 5870 vs RT/duroid 5880: Rogers High Frequency PCB Material Comparison Guide
RT/duroid 5870 and RT/duroid 5880 are among the most widely used Rogers high frequency PCB materials for microwave, millimeter-wave, aerospace, radar, and satellite communication applications. When signal frequencies move into the Ku-band, Ka-band, and even W-band ranges, traditional FR4 materials can no longer provide the low insertion loss and dielectric stability required for reliable RF performance.
Both RT/duroid 5870 and RT/duroid 5880 belong to the Rogers PTFE laminate family. These materials are reinforced with randomly oriented glass microfibers, providing exceptional dielectric consistency, low moisture absorption, and excellent electrical performance across a wide frequency range.
For engineers designing antenna arrays, radar systems, microwave circuits, or satellite communication equipment, understanding the differences between RT/duroid 5870 and RT/duroid 5880 is essential for selecting the most suitable high frequency PCB material.
Rogers RT/duroid 5870 and RT/duroid 5880 high frequency PCB laminates
What Are RT/duroid 5870 and RT/duroid 5880?
RT/duroid 5870 and RT/duroid 5880 are PTFE-based composite laminates developed by Rogers Corporation for demanding RF and microwave applications.
Unlike standard PTFE substrates, these materials use randomly distributed glass microfiber reinforcement. This structure helps maintain excellent dielectric constant uniformity while minimizing performance variation over frequency and temperature.
Key benefits include:
Ultra-low dielectric loss
Stable dielectric constant over frequency
Excellent moisture resistance
Low signal attenuation at microwave frequencies
Suitable for multilayer RF PCB fabrication
UL94 V-0 flame-retardant rating
According to the official Rogers material data, both materials have a moisture absorption rate of only 0.02%, making them suitable for outdoor communication systems, aerospace electronics, and harsh operating environments.
For official material information, visit:
https://rogerscorp.com
RT/duroid 5870 vs RT/duroid 5880 Specifications
| Property | RT/duroid 5870 | RT/duroid 5880 |
|---|---|---|
| Dielectric Constant (Dk @10GHz) | 2.33 ± 0.02 | 2.20 ± 0.02 |
| Dissipation Factor (Df @10GHz) | 0.0012 | 0.0009 |
| Thermal Expansion (X Axis) | 22 ppm/°C | 31 ppm/°C |
| Thermal Conductivity | 0.22 W/m/K | 0.20 W/m/K |
| Moisture Absorption | 0.02% | 0.02% |
| Flammability Rating | UL94 V-0 | UL94 V-0 |
The most significant difference is electrical loss.
RT/duroid 5880 offers an exceptionally low dissipation factor of 0.0009 at 10 GHz, making it one of the lowest-loss PCB materials available for microwave and millimeter-wave circuits.
RT/duroid 5870, while slightly higher at 0.0012, provides improved dimensional stability due to its lower coefficient of thermal expansion.
Electrical Performance Comparison
When evaluating RF materials, insertion loss is often the most important parameter.
RT/duroid 5880 is designed for applications where every fraction of a decibel matters. Its lower dielectric constant and lower loss tangent allow signals to travel longer distances with reduced attenuation.
Typical applications include:
Millimeter-wave antennas
Ka-band communication systems
Satellite payload electronics
Electronic warfare systems
Aerospace microwave circuits
RT/duroid 5870 is often selected when mechanical stability becomes equally important.
Typical applications include:
Military radar systems
Missile guidance electronics
Outdoor communication infrastructure
Temperature-sensitive microwave assemblies
Manufacturing Considerations
Both RT/duroid 5870 and RT/duroid 5880 are PTFE-based materials and require specialized PCB manufacturing processes.
Unlike Rogers RO4350B or RO4003C, these materials cannot be processed using standard FR4 production methods.
Key manufacturing requirements include:
PTFE-specific drilling parameters
Plasma hole-wall activation
Controlled lamination profiles
Specialized copper plating processes
Tight dimensional control
At SZXCEPCB, all RT/duroid materials undergo in-house plasma activation before copper deposition to ensure reliable plated through-hole performance.
For more information about PTFE PCB fabrication:
Internal Link:
https://szxcepcb.com
Related Reading:
High Frequency PCB Manufacturing:
https://szxcepcb.com/product-category/1/
Rogers PCB Material Guide:
https://szxcepcb.com/product-category/4/
Material Selection Recommendations
The following guidelines can help simplify material selection.
| Design Requirement | Recommended Material | Reason |
|---|---|---|
| Lowest insertion loss | RT/duroid 5880 | Df = 0.0009 |
| Millimeter-wave applications | RT/duroid 5880 | Superior signal performance |
| Wide temperature range | RT/duroid 5870 | Lower thermal expansion |
| Compact RF structures | RT/duroid 5870 | Slightly higher dielectric constant |
| 10–40 GHz circuits | Either material | Both perform well |
| Above 40 GHz | RT/duroid 5880 | Lower attenuation advantage |
In practical designs, both materials can support frequencies well above the Ku-band. However, as frequency increases, the performance advantage of RT/duroid 5880 becomes increasingly noticeable.
Typical Applications
RT/duroid 5870 and RT/duroid 5880 are commonly used in:
Phased array antenna systems
Automotive radar
Aerospace communication equipment
Satellite communication terminals
Military radar systems
Point-to-point microwave links
Electronic warfare systems
Millimeter-wave sensors
In many millimeter-wave antenna designs, RT/duroid 5880 enables higher antenna gain and broader operating bandwidth compared with conventional RF materials.
RT/duroid Series vs RO4000 Series
Engineers often compare RT/duroid materials with Rogers RO4000 laminates.
The key differences are:
Electrical Performance
RT/duroid 5870 and RT/duroid 5880:
Df = 0.0012 and 0.0009
Better suited for millimeter-wave frequencies
RO4003C and RO4350B:
Df approximately 0.0027–0.0037
Excellent for frequencies below 20 GHz
More cost-effective
Manufacturing Process
RO4000 materials:
FR4-compatible processing
Easier fabrication
Lower production cost
RT/duroid materials:
PTFE processing required
Plasma activation required
Higher manufacturing complexity
Cost vs Performance
For applications below X-band, RO4003C and RO4350B often provide the best balance of performance and cost.
For Ka-band, millimeter-wave, aerospace, and ultra-low-loss applications, RT/duroid 5870 and RT/duroid 5880 remain the preferred solutions.
External Resources:
Rogers Corporation:
https://rogerscorp.com
IPC Standards:
https://www.ipc.org
Microwave Journal:
https://www.microwavejournal.com
Conclusion
RT/duroid 5870 and RT/duroid 5880 represent two of the most capable PTFE-based high frequency PCB materials available today.
While both materials deliver exceptional RF performance, they are optimized for slightly different priorities.
RT/duroid 5880 focuses on achieving the lowest possible insertion loss for microwave and millimeter-wave circuits.
RT/duroid 5870 offers a balanced combination of low loss and improved dimensional stability for applications operating across wide temperature ranges.
Selecting the right material requires consideration of operating frequency, thermal environment, manufacturing requirements, and overall system cost. Understanding these differences early in the design phase can significantly improve both electrical performance and long-term product reliability.
Frequently Asked Questions
What is the difference between RT/duroid 5870 and RT/duroid 5880?
RT/duroid 5880 has a lower dielectric constant (2.20) and lower loss tangent (0.0009), while RT/duroid 5870 offers slightly better dimensional stability due to its lower thermal expansion coefficient.
Which material is better for millimeter-wave applications?
RT/duroid 5880 is generally preferred for millimeter-wave and ultra-low-loss applications because of its exceptionally low dissipation factor.
Can RT/duroid 5870 and 5880 be used for satellite communication?
Yes. Both materials are widely used in satellite communication systems, especially in high-frequency RF and microwave circuits.
Do RT/duroid materials require special PCB manufacturing processes?
Yes. Both materials are PTFE-based and require plasma hole-wall activation, PTFE-specific drilling parameters, and specialized lamination processes.
What is the moisture absorption rate of RT/duroid 5870 and RT/duroid 5880?
Both materials have a moisture absorption rate of approximately 0.02%, making them suitable for outdoor and aerospace applications.
What information is needed for an RT/duroid PCB quotation?
Please provide material type, board thickness, layer count, stackup details, operating frequency, impedance requirements, and quantity so the engineering team can recommend the most suitable manufacturing solution.