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20 mil RO4003C PCB
20 mil RO4003C PCB

Rogers RO4350B: The Versatile PCB for High-Frequency Applications

  • January 23. 2024

In the world of PCBs, finding a material that offers both excellent electrical performance and cost-effectiveness can be a challenge. However, the search ends with Rogers RO4350B laminates. These proprietary woven glass reinforced hydrocarbon/ceramic materials strike the perfect balance between superior dielectric properties and ease of manufacturing. In this blog article, we will delve deep into the features, benefits, and applications of RO4350B PCBs, unveiling why they are the go-to choice for high-frequency designs.


Rogers 4350B 10mil substrate boasts an impressive list of features that make it an ideal choice for demanding applications. With a dielectric constant (DK) of 3.48 +/- 0.05 at 10GHz and a low dissipation factor of 0.0037 at the same frequency, RO4350B ensures tight control over electrical performance. The thermal conductivity of 0.69 W/m/°K enables efficient heat dissipation in high-power applications. Additionally, its low coefficient of thermal expansion (CTE) provides excellent dimensional stability across a wide range of temperatures.

10mil RO4350B high frequency PCB


1.Excellent Electrical Performance:

RO4350B's low dielectric tolerance and low loss characteristics make it a reliable choice for applications requiring high-frequency operation. Its stable electrical properties over a wide frequency range allow for controlled impedance transmission lines and repeatable design of filters.

2.Broadband Applications:

Designed to excel in a wide range of frequencies, RO4350B is the perfect match for broadband applications. Its low loss and stable dielectric constant enable higher operating frequencies without compromising performance.

3.Dimensional Stability:

RO4350B's low Z-axis expansion and in-plane expansion coefficient ensure that the PCB remains stable throughout the entire circuit processing temperature range. This quality guarantees consistent performance in critical applications.

4.Cost-Effective Manufacturing:

With RO4350B, volume manufacturing becomes a breeze. The laminates can be fabricated using standard glass epoxy processes, eliminating the need for special handling or treatments. This makes RO4350B a competitively priced option without compromising on quality.

5.CAF Resistant:

RO4350B materials have excellent resistance to conductive anodic filament (CAF) formation. This resistance ensures the longevity and reliability of the PCBs in demanding environments.

PCB Construction Details:

RO4350B is commonly used in 2-layer rigid PCBs. It features a copper layer on both sides, with a core thickness of 0.254mm (10mil). The finished board thickness is 0.32mm, with a 1oz (1.4 mils) outer layer copper weight. The PCBs are finished with immersion silver for optimal performance.

RF Rogers RO4350B PCB

Typical Applications:

RO4350B high frequency PCB finds its applications in various industries where high-frequency operation is crucial. Some of the typical applications include:

1.Cellular Base Station Antennas and Power Amplifiers:

Rogers 4350B enables the design and assembly of high-performance antennas and power amplifiers used in cellular base stations. Its low loss and stable electrical properties ensure efficient signal transmission.

2.RF Identification Tags:

RO4350B is ideal for manufacturing RF identification tags, offering high-frequency capabilities and reliable performance for identification and tracking systems.

3.Radar and Sensors:

In the automotive industry, where radar and sensor systems play a crucial role in safety and navigation, RO4350B provides the necessary high-frequency performance and stability required for these applications.

4.for Direct Broadcast Satellites:

RO4350B is widely used in the manufacturing of low-noise block downconverters (LNBs) for direct broadcast satellites. Its low loss characteristics and stable electrical properties make it an excellent choice for these critical components.


Rogers RO4350B 10mil laminates are a game-changer in the world of high-frequency PCBs. With their exceptional electrical performance, stability, and cost-effectiveness, they are the go-to solution for demanding applications such as cellular base station antennas, automotive radar, and satellite communication systems. By choosing RF Rogers RO4350B PCB, designers can ensure reliable and efficient performance in their high-frequency designs.

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