6-Layer Rigid PCB with M6 Material, High Tg FR-4, Resin-Filled
Vias, and ENIG Finish
(All PCBs are custom-manufactured. Reference images and parameters
may vary based on your design requirements.)
Today I’m excited to introduce our 6-layer rigid PCB made with a
combination of M6 high-speed material and High Tg FR-4. This PCB is
designed for high-frequency applications, delivering exceptional
thermal performance, low signal loss, and mechanical reliability.
It features copper coin embedding, resin-filled and capped vias, and a high-quality ENIG surface finish, making it an excellent choice for industries like 5G
communication, automotive electronics, and aerospace.
1. Overview of the 6-Layer Rigid PCB
This 6-layer PCB is engineered for high-speed and high-frequency
designs, using M6 material for its core and IS370HR laminates for its prepreg layers. The PCB has a finished thickness of 1.0mm,
with 1oz copper weight on the outer layers and resin-filled, capped vias to ensure
excellent reliability.
The copper coin embedded in the center of the PCB enhances its
thermal performance, making it suitable for applications requiring
efficient heat dissipation. With green solder mask on both sides
and white silkscreen, this PCB meets IPC-Class-2 quality standards
and is rigorously tested for electrical reliability.
2. PCB Construction Details
| Parameter | Specification |
| Base Material | M6 High-Speed Material + High Tg FR-4 |
| Layer Count | 6-layer |
| Board Dimensions | 120mm x 60mm ± 0.15mm |
| Minimum Trace/Space | 4/4 mils |
| Minimum Hole Size | 0.2mm |
| Finished Thickness | 1.0mm |
| Finished Copper Weight | 1oz (1.4 mils) outer layers |
| Via Plating Thickness | 20 μm |
| Surface Finish | ENIG (Electroless Nickel Immersion Gold) |
| Top/Bottom Solder Mask | Green |
| Top/Bottom Silkscreen | White |
| Copper Coin | Embedded in the center of the PCB |
| Via Type | Resin-filled and capped |
| Electrical Testing | 100% tested for quality assurance |
3. PCB Stackup and Material Properties
The 6-layer stackup combines M6 material and IS370HR laminates for
enhanced electrical and thermal performance:
| Layer | Material | Thickness | Dielectric Constant (Dk) |
| Layer 1 | Copper (1oz) | 35 μm | - |
| Prepreg | R5775G (M6 Core) | 0.25mm | 3.61 |
| Layer 2 | Copper (0.5oz) | 18 μm | - |
| Prepreg | IS370HR - 1080 (64%) x 2 | 0.14mm | 3.72 |
| Layer 3 | Copper (1oz) | 35 μm | - |
| Core | IS370HR Core | 0.1mm | 4.17 |
| Layer 4 | Copper (1oz) | 35 μm | - |
| Prepreg | IS370HR - 1080 (64%) x 2 | 0.14mm | 3.72 |
| Layer 5 | Copper (0.5oz) | 18 μm | - |
| Core | IS370HR Core | 0.1mm | 4.17 |
| Layer 6 | Copper (1oz) | 35 μm | - |
Key Material Properties
M6 High-Speed Material
- Dielectric Constant (Dk): 3.4 at 1GHz, 3.34 at 13GHz
- Dissipation Factor (Df): 0.002 at 1GHz, 0.0037 at 13GHz
- High Tg: >185°C (DSC method), 210°C (DMA method)
- Thermal Decomposition Temperature (Td): 410°C
- RoHS and Halogen-Free Compliant
IS370HR Material
- Tg: 180°C (DSC)
- Thermal Decomposition Temperature (Td): 340°C
- Low X/Y CTE: 13/14ppm/°C for improved reliability
- UV Blocking: Ensures compatibility with Automated Optical
Inspection (AOI)
4. Applications of the 6-Layer Rigid PCB
Millimeter-wave antennas and RF front-ends for Active Antenna Units
(AAU).
Advanced Driver Assistance Systems (ADAS) and 77GHz millimeter-wave
radar systems.
Routers, switches, and other high-speed networking equipment.
Radar systems, avionics, and satellite communication devices.
The combination of M6 material, copper coin embedding, and resin-filled vias ensures this PCB meets the demands of cutting-edge applications with superior thermal and electrical performance.
Why Choose Bicheng Technologies?
At Bicheng Technologies Limited, we specialize in delivering
high-quality PCBs tailored to your specific requirements. Our
6-layer rigid PCB with M6 high-speed material and High Tg FR-4 is
designed to meet the challenges of modern high-frequency designs.
- Precision Manufacturing: All PCBs are tested to meet IPC-Class-2
standards.
- Global Availability: We deliver our products worldwide, ensuring
timely support for your projects.
- Customer Focus: Our team works closely with you to provide
customized solutions for your application needs.
If you have any technical questions or need assistance, feel free
to contact me at sales30@bichengpcb.com. I look forward to helping you bring your ideas to life!
