In the world of high-frequency circuit design, not all materials are created equal. As demands for faster data transmission, better signal integrity, and improved thermal performance increase, traditional PCB substrates like FR4 often fall short. This is where Rogers 5870 PCB comes into play. Designed specifically for RF, microwave, and high-speed digital applications, Rogers 5870 offers engineers a robust solution that bridges the gap between performance and reliability. Whether you’re building antennas for aerospace or precision circuits for 5G infrastructure, understanding this material is essential for optimal design outcomes.
1. What Is Rogers 5870 PCB?
Rogers 5870 is a high-frequency laminate made from glass microfiber-reinforced PTFE (Polytetrafluoroethylene), engineered for use in RF and microwave PCB applications. It belongs to the RO4000 series but is particularly notable for its ultra-low dielectric constant and minimal loss tangent.
Key Technical Specs:
- Dielectric Constant (Dk): ~2.33 ± 0.02 at 10GHz
- Dissipation Factor (Df): 0.0012
- Thermal Coefficient of Dk: -115 ppm/°C
- Operating Temperature: Up to 250°C
- Moisture Absorption: 0.02% (very low)
2. Core Features and Benefits
Rogers 5870 offers several performance advantages that make it ideal for demanding environments:
- Low Dk and Df: Ensures minimal signal loss, ideal for sensitive analog and RF circuits.
- Excellent Thermal Stability: Maintains electrical properties across a wide temperature range.
- Mechanical Consistency: High dimensional stability and rigidity even under mechanical stress.
- Superior Moisture Resistance: Suitable for aerospace, automotive radar, and outdoor applications.
3. Rogers 5870 PCB vs FR4: What’s the Difference?
| Property | Rogers 5870 | FR4 |
| Dielectric Constant | ~2.33 | ~4.5 |
| Loss Tangent | 0.0012 | ~0.020 |
| Max Frequency | >10 GHz | <3 GHz |
| Moisture Absorption | 0.02% | 0.10%+ |
| Cost (USD) | $400–$600/m² | $40–$80/m² |
Rogers 5870 is up to 10x more expensive than FR4, but essential for high-frequency performance.
4. Common Applications of Rogers 5870 PCB
- RF and Microwave Antennas
- Satellite Communication Systems
- 5G Base Stations and Small Cells
- Radar and Aerospace Navigation
- Medical Imaging Equipment (MRI/Ultrasound)
- High-Speed Wireless Modules
5. Design Considerations for Rogers 5870 PCB
When designing with Rogers 5870, engineers should consider:
- Controlled Impedance: Essential for signal integrity
- Layer Stack-Up: Balance between Dk uniformity and copper layer thickness
- Copper Thickness: 0.5oz to 2oz commonly used
- Via Plating and Drill Tolerance: Ensure high-frequency compatibility
- Thermal Management: Even with low Df, consider heat sinks in RF power sections
6. Manufacturing Challenges and Tips
Manufacturing with Rogers 5870 requires experience and precision:
- Drilling: Special bits required to prevent delamination
- Lamination Temperature: Must be tightly controlled
- Etching: Needs slower, chemically compatible processes
- Solder Mask Compatibility: Avoid high-acid or rigid curing resins
Always work with a PCB fabricator experienced in PTFE-based laminates.
7. Rogers 5870 PCB Price Range in 2025
The cost of Rogers 5870 PCBs varies depending on thickness, copper weight, layer count, and order volume:
Sample Pricing (as of 2025):
- Single-layer 1.6mm, 1oz Cu, 100 pcs: $12–$18 per piece
- Double-layer, 1.6mm, 1oz Cu, 50 pcs: $25–$35 per piece
- 4-layer, 1.6mm, mixed laminate stack-up, 10 pcs: $50–$70 per piece
- Prototype (1 pc): $80–$120 depending on specs
Bulk orders (1000 pcs+) can reduce costs by 15–25%.
8. Where to Buy Rogers 5870 PCBs
You can purchase high-quality Rogers 5870 PCBs from:
- China-based manufacturers with advanced RF fabrication capabilities
- North American suppliers offering fast prototyping
- Specialized distributors such as Rogers-authorized partners
Check for ISO 9001, IATF 16949, and UL certifications for quality assurance.
9. KingSunPCB: Your Reliable Rogers 5870 PCB Manufacturer
At KingSunPCB, we specialize in the fabrication of high-frequency PCBs, including Rogers 5870, 4350B, and Taconic series materials. Here’s why customers choose us:
- Over 10 years of RF PCB experience
- Tight impedance control (±5%)
- Fast lead time: 5–7 working days
- Full CAM engineering review before production
- Free engineering support and instant quotation
Request a quote today and get competitive pricing for Rogers 5870 PCBs.
10. FAQs About Rogers 5870 PCB
Q1: Can Rogers 5870 be used in multilayer stack-ups?
Yes, often paired with prepreg layers or FR4 in hybrid stack-ups.
Q2: Is Rogers 5870 suitable for automotive radar?
Absolutely. It’s commonly used in 77GHz radar systems.
Q3: What’s the shelf life of Rogers 5870 laminates?
Stored properly, it remains stable for 1–2 years before fabrication.
11. Conclusion
Rogers 5870 PCBs are the gold standard when it comes to high-frequency and RF applications. With exceptional electrical performance, moisture resistance, and thermal stability, this material is indispensable for industries like aerospace, telecom, and defense. While the cost is higher than standard FR4, the long-term reliability and performance benefits far outweigh the price—especially when paired with an experienced manufacturer like KingSunPCB.