Unlock Superior Performance with the 6-Layer 370HR PCB

If you’re searching for a high-performance multilayer PCB that delivers reliability, thermal stability, and precision, look no further than the 6-layer 370HR PCB. Built with Isola’s 370HR laminate, this PCB is designed for demanding applications where thermal performance and durability are critical. Whether you’re working on networking equipment, automotive systems, or aerospace technology, this PCB is a robust foundation for your designs.
 
 

Precision and Durability in Design

The 6-layer 370HR PCB is engineered to meet the needs of modern, high-performance electronic designs. Here’s a breakdown of its key construction details:

• Base Material: Isola 370HR, a high Tg (180°C) FR-4 system known for its exceptional thermal and mechanical properties.
• Layer Count: 6 rigid layers, optimized for signal integrity and thermal management.
• Dimensions: Each board measures 102.87mm x 128.5mm, with a precision tolerance of +/- 0.15mm.
• Thickness: Finished board thickness is 1.02mm +/- 0.05mm (40.4 mils), ensuring a compact and lightweight design.
• Copper Weight: 1oz (1.4 mil) for signal and plane layers, providing excellent conductivity and thermal performance.
• Trace/Space: Minimum trace width and spacing of 4/4 mils, ensuring precise routing for high-density designs.
• Surface Finish: Electroless Nickel Immersion Gold (ENIG) with 0.1um (0.004 mils) gold, ensuring excellent solderability and corrosion resistance across operating temperatures from -40°C to +85°C.
• Silkscreen and Solder Mask:
  • Top and Bottom Silkscreen: White for clear component labeling.
  • Top and Bottom Solder Mask: Green for protection and durability.
• Breakouts: Tab-routed edges with non-plated holes for easy panel breakouts.

For added assurance, the board includes a UL mark and undergoes 100% electrical testing to ensure quality and reliability.
 
 

Optimized PCB Stackup for Signal Integrity

This PCB’s stackup is tailored to maximize electrical performance while maintaining structural and thermal stability.

6-Layer Stackup Configuration:

1. Top Layer (Signal): 1.4mil (1oz) copper.
2. Ground Plane (Layer 2): 1.4mil (1oz) copper, critical for impedance reference.
3. Mid Layer 1 (Signal): 1.4mil (1oz) copper.
4. Mid Layer 2 (Signal): 1.4mil (1oz) copper.
5. Power Plane (Layer 5): 1.4mil (1oz) copper.
6. Bottom Layer (Signal): 1.4mil (1oz) copper.

The Isola 370HR core and prepreg layers between the copper planes ensure excellent thermal stability and mechanical strength.

Impedance Matching for High-Frequency Designs

Impedance Matching for High-Frequency Designs

The 6-layer 370HR PCB is designed with impedance control to maintain signal integrity in high-speed and high-frequency applications. Impedance values are matched to within +/- 10%, ensuring precision across layers:

• Layer 1: 10mil single-ended, 50 ohm (referenced to Layer 2).
• Layer 3: 6mil single-ended, 50 ohm (referenced to Layer 2).
• Layer 4: 6mil single-ended, 50 ohm (referenced to Layer 5).
• Layer 6: 10mil single-ended, 50 ohm (referenced to Layer 5).

This impedance control minimizes signal reflection and loss, making the board ideal for high-speed communication protocols and RF applications.

Why Choose Isola 370HR?

The foundation of this PCB’s performance lies in its material: Isola 370HR. Known for its superior thermal and mechanical properties, the 370HR laminate is a high-Tg FR-4 system that offers several advantages over traditional FR-4 materials.

Key Features of 370HR:

• High Thermal Performance: Tg of 180°C and decomposition temperature (Td) of 340°C ensure stability in extreme environments.
• Dimensional Stability: Low X/Y-axis CTE of 13/14 ppm/°C enhances reliability during thermal cycling.
• CAF Resistance: Prevents conductive anodic filament formation, improving long-term reliability.
• UV Blocking and AOI Fluorescence: Ensures compatibility with automated optical inspection and photoimaging systems.
• Moisture Resistance: Superior chemical and moisture resistance compared to traditional FR-4.
• Sequential Lamination Compatibility: Ideal for complex, high-layer-count designs requiring multiple lamination cycles.

Applications of the 6-Layer 370HR PCB

Thanks to its advanced materials and design, this PCB is versatile and reliable across a wide range of industries. Typical applications include:

• Networking and Communications: Routers, switches, and communication equipment.
• Automotive and Transportation: Electronic control units and advanced driver-assistance systems (ADAS).
• Aerospace and Defense: Navigation systems, avionics, and radar systems.
• Medical Devices: Diagnostic equipment and instrumentation.
• Consumer Electronics: High-performance computing peripherals.

The ability of the 370HR PCB to handle extreme temperatures, high-speed signals, and rigorous reliability standards makes it an excellent choice for demanding applications.

Why This PCB Stands Out

What makes the 6-layer 370HR PCB unique is its ability to combine high performance with reliability. Here’s why it’s the perfect solution for your projects:

• Thermal Stability: With a high Tg and low CTE, it withstands extreme thermal cycles without compromising performance.
• Precision Engineering: Impedance control and tight tolerance provide unmatched signal integrity.
• Manufacturability: Compatible with FR-4 processing, it offers cost-efficient fabrication while maintaining premium quality.
• Durability: From its ENIG surface finish to its CAF resistance, this PCB is built for long-term reliability.

Conclusion: Build with Confidence

The 6-layer 370HR PCB is more than just a circuit board—it’s a high-performance foundation for innovation. Whether you’re designing advanced communication systems, automotive electronics, or aerospace equipment, this PCB delivers the reliability, thermal stability, and precision you need to succeed.

If you’re ready to take your designs to the next level, this PCB is your solution. Contact us today to learn more or place your order. Let’s build the future together!