High-Frequency RO3003 PCB – 2-Layer 5mil with ENIG Finish for RF and Microwave Applications
1. Introduction to RO3003 High-Frequency Laminate
Rogers RO3003 is a ceramic-filled PTFE composite engineered for commercial microwave and RF applications. It delivers exceptional dielectric constant (Dk) stability across temperature and frequency variations, eliminating the Dk step change observed in standard PTFE glass materials. This makes it ideal for:
Automotive radar systems (77 GHz)
ADAS (Advanced Driver Assistance Systems)
5G wireless infrastructure (mmWave frequencies)
Satellite communications and high-speed RF designs
2.PCB Construction Details
| Parameter | Details |
|---|---|
| Base Material | Rogers RO3003 high-frequency laminate |
| Layer Count | 2 layers |
| Board Dimensions | 69.25mm × 92.45mm (2 types, 2 pieces) |
| Critical Design Rules | Trace/Space: 5/5 mils minimum |
| Minimum Hole Size: 0.2mm | |
| No Blind/Buried Via | |
| Thickness & Copper | Finished Thickness: 0.2mm |
| Copper Weight: 1 oz (35µm) outer layers | |
| Via Plating: 20µm | |
| Surface Finish | Immersion Gold (ENIG) |
| Solder Mask | Green (top only) |
| Silkscreen | None |
| Testing | 100% electrical test prior to shipment |
3. PCB Stackup (2-Layer Rigid Construction)
Layer 1: Copper (35µm)
Core: Rogers RO3003 substrate (5mil / 0.127mm)
Layer 2: Copper (35µm)
4.PCB Statistics:
Components: 21
Total Pads: 63
Thru Hole Pads: 37
Top SMT Pads: 26
Bottom SMT Pads: 0
Vias: 51
Nets: 2
5. Manufacturing & Compliance Specifications
Artwork Format: Gerber RS-274-X
Quality Standard: IPC-Class-2 compliant
Global Availability: Worldwide production and shipping
6.Key Electrical & Mechanical Properties
Dielectric Constant (Dk): 3.00 ±0.04 @ 10 GHz/23°C
Dissipation Factor (Df): 0.001 @ 10 GHz
Thermal Performance:
Decomposition Temp. (Td): >500°C
Thermal Conductivity: 0.5 W/mK
Moisture Absorption: 0.04%
CTE (Coefficient of Thermal Expansion):
X/Y-Axis: 17/16 ppm/°C (matches copper)
Z-Axis: 25 ppm/°C
7.Advantages for RF/Microwave Designs
Ultra-Low Loss: Suitable for 77 GHz automotive radar and mmWave 5G.
Stable Dk vs. Temp/Freq: Ensures consistent performance in filters, patch antennas, and oscillators.
Reliable Multilayer Compatibility: Hybrid designs with epoxy-glass PCBs.
Copper-Matched CTE: Reduces thermal stress for SMT assemblies.
8. Typical Applications
Automotive: Radar, ADAS sensors
Telecom: 5G base stations, power amplifiers
Aerospace: GPS antennas, satellite comms
High-Speed Digital: Backplanes, datalinks