DK 3.48 4-layer Hybrid PCB 0.508mm RO4350B+ Tg170 FR-4 finished 0.98mm with ENIG PTH and blind vias using in Radar and Sensors

Our 4-Layer Hybrid PCB with RO4350B and FR-4

We are pleased to present our 4-layer hybrid PCB, which combines the superior electrical performance of Rogers RO4350B with the cost-effectiveness and manufacturability of FR-4. This PCB is designed for high-frequency applications requiring low signal loss, excellent thermal stability, and reliable multi-layer construction. Below, we provide a comprehensive overview of its construction, features, and applications.

PCB Construction Details

This hybrid PCB is engineered for precision and performance, utilizing a 0.508mm (20mil) RO4350B core and Tg170 FR-4 in a carefully optimized layer stackup. The detailed specifications are presented in the table below:

PCB Stackup

The combination of RO4350B and FR-4 ensures that this PCB offers both high-frequency performance and cost efficiency while maintaining excellent thermal and mechanical stability.

PCB Statistics

About Rogers RO4350B Material

The Rogers RO4350B material is a woven glass-reinforced hydrocarbon/ceramic laminate that provides PTFE-like electrical performance and FR-4-like manufacturability. It is a proven choice for multi-layer board (MLB) constructions, offering tight control of the dielectric constant (Dk), low loss, and excellent dimensional stability.

Key Features of RO4350B:

• Dielectric Constant (Dk): 3.48 ± 0.05 at 10GHz/23°C.
• Dissipation Factor (Df): 0.0037 at 10GHz/23°C.
• Thermal Conductivity: 0.69 W/m/°K.
• Coefficient of Thermal Expansion (CTE): X-axis: 10 ppm/°C. Y-axis: 12 ppm/°C. Z-axis: 32 ppm/°C.
• High Glass Transition Temperature (Tg): >280°C.
• Low Water Absorption: 0.06%.
• Flammability: UL 94 V-0 rated.

Benefits of the Hybrid PCB

High-Frequency Performance:
The RO4350B core ensures low signal loss, tight Dk control, and excellent thermal stability, making it ideal for RF and microwave applications.

Cost-Effective Construction:
By combining RO4350B with FR-4, this hybrid PCB offers high performance at a fraction of the cost of full PTFE-based boards.

Dimensional Stability:
The material's thermal coefficient of expansion (CTE) is closely matched to copper, ensuring reliable plated-through-hole (PTH) quality, even in extreme conditions.

Environmentally Friendly:
The PCB is UL 94 V-0 rated and complies with environmental standards, providing a safe and sustainable solution.

Applications

Cellular Base Station Antennas and Power Amplifiers 

RF Identification (RFID) Tags

Automotive Radar and Sensors 

Direct Broadcast Satellites (LNBs) 

Conclusion

The 4-layer hybrid PCB with RO4350B and FR-4(https://www.circuitboardpcbs.com/sale-12282168-4-layer-rf-circuit-board-on-rogers-60mil-ro4350b-and-10mil-ro4350b-with-back-drill-for-uhf-coupler.html) is an innovative solution for high-frequency applications requiring low loss, excellent dimensional stability, and cost efficiency. Its hybrid construction combines the best features of RO4350B and FR-4, making it ideal for industries such as telecommunications, automotive, and aerospace.

For more information or to place an order, contact us today. We are committed to delivering high-quality PCBs tailored to your specific needs!