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Rogers PCB

4350B PCB

Thickness: 0.1-12mm

Coper Foil Thickness: 0.5oz-5oz

Max Panel Size: 480*800mm

Drilling Diameter: ≥0.1mm

Aperture Tolerance: ±0.05mm

Hole Position Tolerance: ±0.05mm

Inner Core Thickness: 0.1-4.0mm


4350B PCB is a high performance printed circuit board material known for its excellent electrical and thermal properties. Below are some key properties and application areas regarding 4350B PCB:

Dielectric Constant: 

Rogers 4350B has a dielectric constant of 3.48, which is lower than FR4 materials commonly used in the PCB industry. This means that it has a lower electromagnetic wave propagation velocity, which helps to reduce signal transmission delays and increase the speed and efficiency of signal transmission.

Dielectric Constant Tolerance: 

4350B has a lower dielectric constant tolerance, which means that the dielectric constant has a smaller range of variation. This helps the material to have a better microstructure with fewer internal defects and impurities, thus providing stable dielectric properties.

Coefficient of Thermal Expansion: 

RO4350B has a very low coefficient of thermal expansion of 32 ppm/°C in the Z-axis direction. This helps to maintain the stability of the PCB structure during temperature changes, reducing thermal stress and preventing stress buildup and damage inside the PCB due to temperature changes.

CAF Impedance: 

CAF (conductive anode electrochemical migration) impedance is an excellent feature of the Rogers RO4350B that prevents current leakage and short circuits, reducing equipment damage and repair costs due to electrical failures.

Adaptability to Mass Production: 

The 4350B HF sheet can be adapted to conventional PCB manufacturing techniques without the need for special pre-treatment processes such as plasma treatment of PTFE sheets or any other additional processes.

Application Areas: 

Due to its excellent dielectric constant, coefficient of thermal expansion, and CAF impedance, 4350B is very popular in the HF telecom field and is used in a wide range of applications such as cellular base station antennas, power amplifiers, microwave point-to-point connectivity, automotive radar and sensors, RFID tags, and HF headers for direct broadcast satellites.

Manufacturer Information: 

Rogers Corporation is a leading manufacturer of 4350B PCB material, offering a wide range of sheet sizes and thicknesses to meet the needs of different applications.

Product Details: 

RO4350B sheet has a dielectric constant of 4 and a dissipation factor of 0.0031 to 0.0037, and can be used at frequencies up to 40 GHz. It can be used to develop RF and microwave circuits, matching networks and controlled impedance transmission lines.


4350B PCB material is used in a number of industries due to its excellent electrical properties and thermal stability, notably:

Telecommunications Industry: 

Used in the manufacture of high-speed telecommunications equipment such as cellular base station antennas, power amplifiers, and microwave point-to-point connections.

Automotive Industry: 

Used in applications such as automotive radar and sensors to improve the safety performance and intelligence of automobiles.


Used in satellite communications and high-frequency circuits in spacecraft due to their ability to withstand extreme temperatures and environmental conditions.

Medical Devices: 

Used in a number of high-performance medical imaging devices and monitoring systems to ensure the accuracy and reliability of signal transmission.

Consumer Electronics: 

In some high-performance consumer electronics, such as the RF portion of smartphones and tablets.

Industrial Control: 

Used in precision control and automation systems for high-speed data transmission and processing.

Military and Defense: 

Used in military communication and radar systems due to their ability to provide high signal integrity and interference immunity.


4350B PCB material is used in smartwatches and other wearable technology products due to its small size and high reliability requirements.

Broadcast Satellites: 

Used in satellite communication systems to support the transmission of high frequency signals.

Remote Meter Readers: 

Used in smart grid and remote monitoring systems for wireless transmission of data.

Test Instruments: 

Used in a number of test and measurement devices that require high precision measurements.

These application industries utilize the 4350B PCB material's low dielectric constant, low loss factor, low coefficient of thermal expansion, and good CAF (conductive anode electrochemical migration) impedance to improve product performance and reliability.


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