4-Layer PCB with RO3210, 1.24mm Thickness, and Immersion Gold
Finish
(All PCBs are custom-manufactured. Reference images and parameters
may vary based on your design requirements.)
1. Overview of the 4-Layer PCB
This 4-layer rigid PCB is built with Rogers RO3210, a
high-frequency circuit material that combines ceramic-filled
laminates with woven fiberglass reinforcement, offering improved
mechanical stability and uniform electrical performance. The smooth
surface of RO3210 is ideal for finer line etching tolerances,
ensuring reliability in complex designs.
The immersion gold (ENIG) surface finish provides excellent
solderability and long-term corrosion resistance. While no solder
mask or silkscreen is applied, the board is designed with precision
and tested to IPC-Class-2 standards, guaranteeing quality and
reliability.
2. PCB Construction Details
| Parameter | Specification |
| Base Material | Rogers RO3210 |
| Layer Count | 4 layers |
| Board Dimensions | 60mm x 55mm ± 0.15mm |
| Minimum Trace/Space | 4/6 mils |
| Minimum Hole Size | 0.3mm |
| Via Type | No Blind Vias |
| Finished Board Thickness | 1.24mm |
| Finished Copper Weight | 1oz (1.4 mils) outer layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | Immersion Gold |
| Top Solder Mask | None |
| Bottom Solder Mask | None |
| Top Silkscreen | None |
| Bottom Silkscreen | None |
| Electrical Testing | 100% tested to IPC-Class-2 standards |
3. PCB Stackup
The 4-layer stackup is engineered for high-frequency RF designs,
balancing performance and thermal management. Here’s the structure:
| Layer | Material | Thickness |
| Copper Layer 1 | Copper (1oz) | 35 μm |
| Core Material | Rogers RO3210 | 0.508mm (20mil) |
| Copper Layer 2 | Copper (1oz) | 35 μm |
| Bonding Layer | Prepreg | 0.102mm |
| Copper Layer 3 | Copper (1oz) | 35 μm |
| Core Material | Rogers RO3210 | 0.508mm (20mil) |
| Copper Layer 4 | Copper (1oz) | 35 μm |
4. Features of Rogers RO3210
- Dielectric Constant (Dk): 10.2 ± 0.5 at 10 GHz, delivering stable
signal propagation.
- Dissipation Factor (Df): 0.0027 at 10 GHz, minimizing signal loss.
- Decomposition Temperature (Td): 500°C, ensuring reliability in
high-heat environments.
- Thermal Conductivity: 0.81W/mK, providing effective heat
dissipation.
- CTE (Coefficient of Thermal Expansion): X-axis: 13 ppm/°C. Y-axis:
13 ppm/°C. Z-axis: 34 ppm/°C, ensuring dimensional stability and
plated-through hole reliability.
- Flammability Rating: UL 94 V-0, meeting stringent safety standards.
- Smooth Surface: Ideal for fine line etching tolerances, enabling
precise designs.
5. Benefits of RO3210 Material
Mechanical Stability: Woven glass reinforcement improves rigidity and handling, ensuring
reliable assembly.
Dimensional Stability: Low CTE provides compatibility with copper and hybrid designs,
ensuring high production yields.
High Dielectric Performance: Uniform electrical properties make it suitable for multi-layer,
high-frequency structures.
Finer Line Etching: Smooth surface allows for tighter tolerances in complex designs.
Cost-Effective Fabrication: Compatible with standard PTFE processing techniques, reducing
production costs.
6. Applications of the 4-Layer PCB
Automotive Collision Avoidance Systems: Ensures stable signal performance in safety-critical systems.
Automotive GPS Antennas: Provides precision signal transmission for satellite navigation.
Wireless Telecommunications Systems: Ideal for base station infrastructure and broadband wireless
communication.
Microstrip Patch Antennas: Suitable for compact, high-performance wireless communication
designs.
Direct Broadcast Satellites: Ensures reliability in satellite communication systems.
Datalink and Power Backplanes: Suitable for efficient data transmission and power management
systems.
Why Choose Bicheng Technologies?
At Bicheng Technologies Limited, we specialize in manufacturing
high-quality PCBs for RF and microwave applications. Our 4-layer
PCB with Rogers RO3210 material combines cutting-edge materials and
precise manufacturing techniques to deliver reliable performance
for your high-frequency designs.
Why Work With Us?
Global Availability: We deliver worldwide and provide excellent
customer support.
High Standards: All PCBs are tested to IPC-Class-2 standards for
reliable performance.
Customized Solutions: We work closely with you to meet your
specific requirements.
If you’re looking for a trusted partner to bring your innovative
designs to life, feel free to contact me at sales30@bichengpcb.com. Let’s collaborate to make your next project a success!
