Engineered for the rigorous demands of modern automotive sensing and smart city infrastructure, the RO4003C 0.5mm 4-Layer Vehicle Occupancy Detection Board represents the pinnacle of high-frequency PCB performance. This specialized circuit board is designed to facilitate ultra-reliable occupancy monitoring, ensuring high-precision data acquisition in environments where signal integrity is non-negotiable.
Premium Material Selection: Rogers 4003C
The foundation of this board is the Rogers 4003C hydrocarbon ceramic laminate. Unlike standard FR-4 materials, RO4003C offers a low dielectric constant ($Dk$ of 3.38) and a dissipation factor ($Df$ of 0.0027), making it the industry standard for microwave and RF applications. This ensures that the high-frequency signals required for radar-based or ultrasonic vehicle detection remain stable across varying temperatures and humidity levels.
Optimized Stack-up and Construction
This 4-layer architecture is meticulously designed for electromagnetic compatibility (EMC).
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Thickness: The 0.5mm profile provides a compact, lightweight footprint suitable for integration into sleek sensor housings or overhead gantries.
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Copper Weight: Utilizing 1/2oz (0.5oz) copper, the board strikes an ideal balance between fine-line signal resolution and thermal management.
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Finish: The ENIG (Electroless Nickel Immersion Gold) surface finish provides a flat, oxidation-resistant surface that is perfect for fine-pitch SMT components and ensures long-term solder joint reliability in high-vibration automotive environments.
Key Features for Vehicle Sensing
The Vehicle Occupancy Detection Board is optimized for multi-node sensor arrays. Whether used for HOV lane monitoring, smart parking systems, or autonomous fleet management, the RO4003C substrate prevents signal drift, ensuring that the difference between an occupied and empty vehicle is detected with millisecond latency.
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Thermal Stability: With a low coefficient of thermal expansion (CTE) on the Z-axis, this board maintains structural integrity through the extreme temperature cycles common in outdoor automotive installations.
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Signal Precision: The 4-layer build allows for dedicated ground and power planes, significantly reducing noise and cross-talk which is essential for processing the weak return signals found in occupancy sensors.
Technical Specifications
| Parameter |
Specification |
| Substrate |
Rogers RO4003C |
| Layer Count |
4 Layers |
| Finished Thickness |
0.5mm |
| Copper Weight |
1/2oz (Finished) |
| Surface Finish |
ENIG (Au: 2-3u”, Ni: 120-240u”) |
| Solder Mask |
Green (Custom options available) |
| Application |
Microwave RF / Vehicle Detection / Radar |
Why Choose PCBSync?
At PCBSync, we understand that automotive technology requires “zero-defect” manufacturing. Our RO4003C 4-layer boards undergo rigorous Automated Optical Inspection (AOI) and Flying Probe Testing to ensure every trace meets your exact impedance requirements. By choosing our ENIG-finished Rogers boards, you are investing in a product that bridges the gap between laboratory-grade RF performance and industrial-scale durability.
Order your RO4003C Vehicle Occupancy Detection Boards today and experience the precision of high-frequency engineering.
