What Is an RO4835 PCB?
An RO4835 PCB is a high-frequency printed circuit board fabricated with Rogers RO4835 laminate, designed for RF and microwave applications requiring low loss, stable dielectric properties, and consistent impedance control.
Rogers RO4835 material combines the electrical performance of PTFE-based laminates with the manufacturability of standard FR-4 processes, making it ideal for high-volume RF designs.
Key Material Properties of RO4835 PCB
Rogers RO4835 offers excellent electrical and mechanical characteristics:
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Dielectric constant (Dk): ~3.48
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Low dissipation factor (Df): ~0.0037
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Excellent thermal stability
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Low z-axis expansion
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Good dimensional stability
These properties enable RO4835 PCBs to maintain reliable RF performance across wide frequency ranges.
Advantages of RO4835 PCB
Using RO4835 PCB provides several benefits:
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Low insertion loss for RF and microwave signals
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Stable impedance for controlled-impedance designs
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Compatibility with standard FR-4 processing
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High reliability in production environments
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Cost-effective alternative to PTFE materials
These advantages make RO4835 PCB suitable for both prototype and mass production.
Design Considerations for RO4835 PCB
When designing an RO4835 PCB, engineers should consider:
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Accurate impedance calculations
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Optimized RF trace width and spacing
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Ground plane continuity
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Via design for RF transitions
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RF connector launch optimization
Close coordination between PCB design and manufacturing ensures optimal RF performance.
Manufacturing Challenges of RO4835 PCB
Producing a high-quality RO4835 PCB requires:
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Tight impedance tolerance control
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Precise dielectric thickness management
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Copper roughness control
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High-accuracy layer alignment
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RF-specific electrical testing
Experienced manufacturers can fully leverage RO4835 material advantages.
Applications of RO4835 PCB
RO4835 PCBs are widely used in:
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RF Test PCB and validation boards
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5G communication equipment
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Wireless infrastructure
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Microwave modules
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Automotive radar systems
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High-frequency measurement devices
They are ideal for applications demanding stable RF performance.
Conclusion
An RO4835 PCB delivers a balanced combination of low loss, high reliability, and manufacturability for RF and microwave designs. With stable dielectric properties and FR-4-like processing, RO4835 PCBs provide an efficient solution for high-frequency applications.
Choosing a professional RO4835 PCB manufacturer ensures accurate impedance control, consistent RF performance, and reliable quality from prototype to volume production.
