High-Frequency 2-Layer RF PCB RO4730G3 Material ENIG Finish
This is a high-quality, double-sided PCB engineered for radio
frequency (RF) applications, particularly suited for antenna
systems. It is fabricated using Rogers RO4730G3 antenna-grade
laminate, ensuring superior electrical performance, reliability,
and cost-effectiveness.
1. PCB Specifications
| Specification Category | Details |
| Base Material | Rogers RO4730G3 (hydrocarbon/ceramic laminate) – Low-loss,
high-frequency substrate; robust and economical alternative to
traditional PTFE-based substrates. |
| Layer Count | 2 layers |
| Physical Dimensions | - Board size: 59.6mm x 40.5mm (1 piece)- Dimensional tolerance:
±0.15mm |
| Design Rules – Traces & Holes | - Minimum Trace/Space: 5 mil / 5 mil- Minimum Drill Size: 0.4mm |
| Design Rules – Vias | - Via Type: Through-hole vias only (no blind vias)- Via Plating
Thickness: 20 μm |
| Board Thickness | Finished board thickness: 0.6 mm |
| Copper Weight | 1 oz (equivalent to 35 μm) on both outer layers |
| Surface Finish | Electroless Nickel Immersion Gold (ENIG) – Provides a flat,
solderable surface with excellent oxidation resistance; optimized
for RF performance. |
| Solder Mask | - Top side: Green (LPI, Liquid Photoimageable) solder mask- Bottom
side: No solder mask (exposed copper) |
| Silkscreen | - Top side: White legend silkscreen- Bottom side: No silkscreen |
2. PCB Stack-up
| Layer Position | Material | Thickness |
| Top Layer | 35 μm Copper | 35 μm (1oz) |
| Core Layer | Rogers RO4730G3 | 0.508mm (20mil) |
| Bottom Layer | 35 μm Copper | 35 μm (1oz) |
3. Key Material Features & Benefits (RO4730G3):
The use of Rogers RO4730G3 material provides significant advantages
for RF designs:
-Optimized RF Performance: Stable dielectric constant (Dk) of 3.00
± 0.05 at 10 GHz and an ultra-low dissipation factor of 0.0028 for
reduced insertion loss.
-Low Passive Intermodulation (PIM): Ideal for cellular base station
antennas where signal integrity is critical.
-Excellent Thermal Stability: High Tg >280°C and a low Thermal
Coefficient of Dk (34 ppm/°C) ensure consistent electrical
performance across temperature variations.
-Ease of Fabrication: Fully compatible with standard FR-4
multi-layer processing and lead-free assembly, eliminating the need
for specialized PTFE treatments.
-Lightweight & Robust: Unique filler system makes the material 30%
lighter than PTFE/glass and features a CTE matched to copper for
enhanced reliability.
-Environmental Compliance: RoHS compliant and compatible with
lead-free soldering processes.
| Characteristic Category | Technical Specification |
| Stable Dielectric Constant (Dk) | 3.00 ± 0.05 at 10 GHz |
| Ultra-Low Signal Loss | Dissipation factor of 0.0028 at 10 GHz |
| Superior Thermal Stability (TCDk) | Thermal Coefficient of Dk: 34 ppm/°C |
| High Thermal Resilience | - Glass Transition Temperature (Tg): >280°C- Decomposition
Temperature (Td): 411°C (TGA) |
| Controlled Thermal Expansion (CTE) | - X-axis: 15.9 ppm/°C- Y-axis: 14.4 ppm/°C- Z-axis: 35.2 ppm/°C |
| Efficient Heat Dissipation | Thermal Conductivity: 0.45 W/mK |
4. Typical Applications:
This PCB is ideally suited for:
-Cellular Base Station Antennas
-Various other RF and antenna applications requiring stable
electrical performance and low loss.
Quality & Testing: Manufactured to IPC-Class-2 standards and undergoes 100%
electrical testing prior to shipment to ensure functionality and
reliability.
Artwork Format: Gerber RS-274-X– the universal industry standard, compatible with
fabrication facilities worldwide.
Availability: This PCB is available for order and shipment worldwide.
