What is Rogers PCB?
2026-01-05
Rogers PCB refers to printed circuit boards manufactured using high-performance, high-frequency circuit board materials produced by Rogers Corporation. These materials are not traditional epoxy-glass fiber substrates (such as FR-4) but are specialized dielectric materials designed for high-frequency, high-speed, and high-reliability applications.
Main Features
1. Low Dielectric Constant (Dk) and Low Dissipation Factor (Df)
- Minimal signal loss during transmission, suitable for high-frequency signals (e.g., microwave and millimeter-wave applications).
- Stable dielectric constant with minimal variation across frequencies, facilitating impedance control.
2. Excellent Thermal Stability
- Minimal fluctuations in electrical performance with temperature changes, suitable for demanding environments.
- Minimal fluctuations in electrical performance with temperature changes, suitable for demanding environments.
3. Low Moisture Absorption
- Low water absorption, ensuring stable dielectric performance in humid conditions.
- Low water absorption, ensuring stable dielectric performance in humid conditions.
4. High Reliability
- Suitable for applications requiring extreme stability, such as aerospace, automotive radar, and 5G base stations.
- Suitable for applications requiring extreme stability, such as aerospace, automotive radar, and 5G base stations.
Common Rogers Material Series
- RO4000 Series (e.g., RO4350B):
Glass-reinforced hydrocarbon ceramic laminate, offering performance close to FR-4 but with superior high-frequency characteristics. Commonly used in RF modules and automotive radar.
- RO3000 Series (e.g., RO3003, RO3035):
Ceramic-filled PTFE composites, excelling in millimeter-wave frequency bands. Ideal for satellite communications and millimeter-wave radar.
Ceramic-filled PTFE composites, excelling in millimeter-wave frequency bands. Ideal for satellite communications and millimeter-wave radar.
- RT/duroid Series (e.g., RT5880, RT6002):
Pure PTFE or ceramic-filled PTFE materials with extremely low loss, used in high-end aerospace and defense applications.
Pure PTFE or ceramic-filled PTFE materials with extremely low loss, used in high-end aerospace and defense applications.
- TMM Series:
Thermoset polymer composites with adjustable dielectric constants, suitable for microwave component design.
Thermoset polymer composites with adjustable dielectric constants, suitable for microwave component design.
Comparison with FR-4 PCB
Feature Rogers Materials Traditional FR-4
Dielectric Constant (Dk) 2.2–10.2 (adjustable) ~4.5 (varies with frequency)
Dissipation Factor (Df) Very low (0.0009–0.004) Relatively high (~0.02)
Cost Higher Low
Processing Techniques Requires special parameters (e.g., drilling, lamination) Standard PCB processes
Processing Considerations
- Drilling and Milling: Some materials contain ceramics/PTFE and require specialized tools.
- Lamination Process: When hybrid lamination is used (e.g., Rogers + FR-4), thermal expansion coefficients must be matched.
- Surface Treatment: Chemical gold/silver immersion processes require adjusted parameters to avoid etching.
Factors to Consider When Selecting Rogers Materials
1. Frequency Range: Prioritize low-loss materials for frequencies > 1 GHz.
2. Thermal Management Needs: High-power circuits require attention to thermal conductivity (e.g., RO4835T with thermal cladding).
3. Cost Balance: Use Rogers materials for high-frequency areas and FR-4 for low-frequency areas in hybrid designs.
Rogers PCBs are critical foundational materials for high-frequency electronic systems, and their performance advantages are indispensable in cutting-edge technologies such as 5G, IoT, and autonomous driving. In practical selection, comprehensive evaluation of electrical performance, mechanical requirements, and cost is essential.
What are the common raw materials for PCBA board production?
Why are multilayer PCB always designed with an even number of layers?
SEND MESSAGE