FR-370HR Laminate PCL-FRP-370HR Prepreg

High-Reliability PCB Materials for Advanced Electronics

In modern high-speed PCB, multilayer PCB, and high-reliability electronic systems, material selection plays a critical role in determining:

• Thermal stability
• Signal integrity
• Mechanical reliability
• Long-term performance

FR-370HR laminate and PCL-FRP-370HR prepreg are advanced epoxy-based materials designed for high Tg, low loss, and multilayer PCB applications.

At KKPCB, these materials are widely used to achieve stable electrical performance and robust manufacturing quality.

2. What Is FR-370HR Laminate?

2.1 Definition

FR-370HR is a high-performance FR4-based laminate engineered for:

• High glass transition temperature (Tg)
• Improved thermal reliability
• Enhanced mechanical strength

2.2 Key Features of FR-370HR Laminate

• High Tg (typically >170°C)
• Excellent thermal resistance
• Good CAF (Conductive Anodic Filament) resistance
• Stable dielectric properties
• Suitable for lead-free soldering processes

3. What Is PCL-FRP-370HR Prepreg?

3.1 Definition of Prepreg

Prepreg is a partially cured resin-impregnated fiberglass material used to bond PCB layers during lamination.

PCL-FRP-370HR prepreg is specifically designed to:

• Match FR-370HR laminate
• Ensure strong layer bonding
• Maintain consistent electrical and thermal properties

3.2 Role in Multilayer PCB Fabrication

During lamination:

• Prepreg melts and flows under heat and pressure
• Bonds copper layers and cores
• Forms a solid dielectric layer after curing

4. Key Material Properties

4.1 Thermal Properties

• High Tg improves resistance to thermal stress
• Stable performance under lead-free reflow conditions
• Reduced risk of delamination

4.2 Electrical Properties

• Low dielectric constant (Dk)
• Stable signal transmission
• Suitable for high-speed digital circuits

4.3 Mechanical Properties

• Strong interlayer adhesion
• Low warpage
• High dimensional stability

5. Importance in Multilayer PCB Manufacturing

5.1 Lamination Process Stability

PCL-FRP-370HR prepreg ensures:

• Controlled resin flow
• Uniform layer bonding
• Reduced void formation

5.2 Signal Integrity Performance

Consistent dielectric properties help maintain:

Z0=LCZ_0 = \sqrt{\frac{L}{C}}Z0​=CL​​

This is critical for:

• Controlled impedance PCB design
• High-speed signal transmission
• Reduced signal loss

5.3 Reliability in Harsh Environments

FR-370HR materials provide:

• High thermal endurance
• Resistance to moisture and chemical stress
• Long-term reliability

6. Manufacturing Considerations

6.1 Lamination Control

Key factors:

• Press temperature and pressure
• Resin flow control
• Cure profile optimization

6.2 Drill and Plating Performance

• Clean hole wall formation
• Good copper adhesion
• Reliable via integrity

6.3 Compatibility with Lead-Free Processes

FR-370HR supports:

• High-temperature soldering
• Multiple reflow cycles

7. Applications of FR-370HR Laminate and Prepreg

These materials are widely used in:

• High-speed communication equipment
• Networking devices and servers
• Industrial control systems
• Automotive electronics
• Consumer electronics requiring high reliability

8. Advantages Over Standard FR4 Materials

9. KKPCB Material and Manufacturing Capability

At KKPCB, capabilities include:

• FR-370HR laminate processing
• Prepreg-controlled lamination
• High-layer-count PCB manufacturing
• Impedance-controlled PCB production
• High-reliability quality assurance

This ensures:

• Stable multilayer bonding
• High electrical performance
• Long-term durability

10. Conclusion

FR-370HR laminate and PCL-FRP-370HR prepreg are essential materials for high-reliability and high-performance multilayer PCB manufacturing.

Their advantages in thermal stability, electrical performance, and mechanical strength make them ideal for modern electronics requiring:

• High-speed signal transmission
• Lead-free process compatibility
• Long-term reliability

With advanced material expertise, KKPCB delivers optimized solutions for next-generation multilayer PCB applications.