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20 mil RO4003C PCB
20 mil RO4003C PCB

What Is Rogers RO4350B Material? - RO4350B 20mil PCB

  • April 22. 2024

The RO4350B material PCB, developed by Rogers Corporation, is a state-of-the-art material that combines the electrical performance of PTFE/woven glass with the manufacturing advantages of epoxy/glass. This proprietary woven glass reinforced hydrocarbon/ceramic material offers exceptional dielectric properties, making it highly suitable for a wide range of applications in the electronics industry. With a focus on delivering superior performance at a fraction of the cost compared to conventional microwave laminates, RO4350B PCBs provide a cost-effective solution without compromising on quality.


The 20 mil Rogers RO4350B Material PCB exhibits remarkable features that contribute to its outstanding performance:

1.Dielectric Constant (Dk): The PCB has a dielectric constant of DK 3.48 +/- 0.05 at 10GHz/23°C, ensuring precise signal integrity and reliable transmission.

2.Dissipation Factor: With a dissipation factor of 0.0037 at 10GHz/23°C, the RO4350B PCB minimizes signal loss and ensures high-frequency performance.

3.Thermal Conductivity: The PCB possesses a thermal conductivity of 0.69 W/m/°K, allowing efficient heat dissipation and ensuring the reliability of temperature-sensitive components.

4.Coefficient of Thermal Expansion (CTE): The RO4350B PCB exhibits excellent dimensional stability with an X-axis CTE of 10 ppm/°C, Y-axis CTE of 12 ppm/°C, and Z-axis CTE of 32 ppm/°C. This characteristic ensures the integrity of the PCB during temperature fluctuations.

5.High Tg Value: The PCB has a high glass transition temperature (Tg) of >280 °C, providing superior thermal stability and allowing for the use of lead-free soldering processes.

6.Low Water Absorption: With a water absorption rate of only 0.06%, the RO4350B PCB maintains its electrical and mechanical properties even in humid environments.


The RO4350B Frequency PCB offers several benefits that make it an ideal choice for various electronic applications:

1.Ideal for Multi-Layer Board (MLB) Constructions: The RO4350B material is well-suited for complex multi-layer board designs, enabling the development of high-density circuits with exceptional performance.

2.Comparable to FR-4 Processes at Lower Cost: The manufacturing process for RO4350B PCBs is similar to that of FR-4 boards, resulting in cost-effective production without compromising on performance.

3.Excellent Dimensional Stability: The low CTE values of the RO4350B PCB ensure minimal dimensional changes, enhancing reliability and minimizing the risk of failures due to thermal stress.

4.Competitive Pricing: RO4350B laminates offer a cost-effective alternative to traditional microwave laminates, providing significant savings without compromising on quality or performance.

Rogers 4350B PCB

PCB Stackup and Construction Details:

The Rogers 4350B PCB is designed as a 2-layer rigid PCB with the following stackup:

Copper Layer 1: 70 μm

Rogers RO4350B Core: 0.508 mm (20mil)

Copper Layer 2: 70 μm

The PCB construction details are as follows:

Board Dimensions: The PCB measures 106.84mm x 60.8 mm, with a tolerance of +/- 0.15mm, ensuring precise fit and compatibility with various applications.

Minimum Trace/Space: The PCB supports a minimum trace/space width of 4/5 mils, allowing for intricate circuit designs and high-density interconnections.

Minimum Hole Size: The PCB accommodates a minimum hole size of 0.3mm, enabling the integration of various components and facilitating efficient assembly processes.

No Blind Vias: The absence of blind vias simplifies the manufacturing process and reduces production time and costs.

Finished Board Thickness: The finished board thickness is 0.6mm, striking a balance between durability and flexibility for diverse applications.

Finished Copper Weight: The outer layers of the PCB have a finished copper weight of 1oz (1.4 mils), ensuring excellent conductivity and signal integrity.

Via Plating Thickness: The via plating thickness is 20 μm, providing reliable interconnectivity and ensuring robust performance.

Surface Finish: The PCB is coated with immersion silver, which offers excellent solderability, superior flatness, and resistance to tarnishing.

Silkscreen and Solder Mask: The RO4350B PCB does not feature top or bottom silkscreen or solder mask layers, providing a clean and minimalist appearance.

100% Electrical Test: Each PCB undergoes a rigorous 100% electrical test before shipment, ensuring the highest quality and reliability.

PCB Statistics:

The RO4350B PCB boasts the following statistics:

Components: The PCB supports up to 16 components, offering flexibility for various application requirements.

Total Pads: There are a total of74 pads on the PCB, providing ample connection points for components and interconnectivity.

Thru Hole Pads: The PCB features 31 thru-hole pads, enabling the integration of through-hole components for added stability and reliability.

Top SMT Pads: With 43 top surface mount technology (SMT) pads, the PCB accommodates a wide range of surface-mounted components, facilitating efficient assembly processes.

Bottom SMT Pads: The RO4350B PCB does not have bottom SMT pads, making it suitable for single-sided assembly or applications where components are only mounted on one side.

Vias: The PCB offers 29 vias, ensuring reliable interconnection between different layers and enhancing signal integrity.

Nets: The PCB supports 2 nets, allowing for the creation of complex circuits and efficient signal routing.

Type of Artwork Supplied and Quality Standard:

The artwork supplied for the RO4350B PCB is in Gerber RS-274-X format, a widely adopted industry standard that ensures compatibility and ease of manufacturing. The PCB conforms to the IPC-Class-2 quality standard, which guarantees high manufacturing quality and reliability.


The RO4350B PCB is available worldwide, making it accessible to customers and manufacturers across the globe. Its widespread availability ensures that advanced electronic applications can benefit from its exceptional performance and cost-effectiveness.

Some Typical Applications:

The RO4350B 20mil PCB finds application in a diverse range of industries and electronic devices, including:

1.Cellular Base Station Antennas and Power Amplifiers

The high-frequency performance and excellent thermal stability of the RO4350B PCB make it ideal for cellular base station antennas and power amplifiers, ensuring reliable and efficient communication signals.

2.RF Identification Tags

The precise signal integrity and low loss characteristics of the RO4350B PCB enable the development of RF identification tags with exceptional performance and reliability.

3.Automotive Radar and Sensors

The RO4350B PCB's thermal stability, low loss, and high-frequency capabilities make it suitable for automotive radar and sensor applications, where accuracy and reliability are crucial for safe and efficient operation.

4.LNBs for Direct Broadcast Satellites

The RO4350B PCB's dielectric properties and dimensional stability make it ideal for use in low-noise block downconverters (LNBs) for direct broadcast satellites, ensuring optimal signal reception and transmission.

In conclusion, the RF Rogers RO4350B PCB offers a high-performance solution for advanced electronic applications. With its exceptional dielectric properties, cost-effectiveness, and ease of manufacturing, it provides a superior alternative to conventional microwave laminates. Whether used in cellular base station antennas, RF identification tags, automotive radar and sensors, or satellite communication devices, the High Frequency RO4350B PCB delivers reliable performance, precise signal integrity, and excellent thermal stability, making it an ideal choice for today's demanding electronic designs.

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IPv6 network supported

IPv6 network supported


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