RF Circuit Board - Kappa 438 PCB

Rogers Kappa 438 is a composite high-frequency circuit board material made of ceramic, glass cloth, and hydrocarbons. Kappa 438 provides excellent high-frequency performance, low material loss, and low circuit board manufacturing cost, and can be manufactured using the standard FR-4 circuit board process.

Kappa 438 circuit board meets UL 94 V-0 flame retardant rating and is compatible with lead-free soldering processes. Kappa 438 is suitable for applications that require high levels of loss and stability.

The standard thickness of Kappa 438 includes 10 mil, 20 mil, 30 mil, 40 mil, and 60 mil

Characteristics of Kappa 438: Dk=4.38, Df=0.005, Tg>280 ° C TMA, Z-axis CTE=42 ppm/° C

kappa 438 datasheet

Rogers Kappa 438 PCB material performs exceptionally well in high-temperature environments, mainly due to its unique material properties and excellent thermal stability.

Kappa 438 has a low coefficient of thermal expansion

Kappa 438 PCB material has an extremely low coefficient of thermal expansion (CTE), with thermal expansion coefficients of 9, 10, and 17 ppm/℃ in the XYZ directions over a wide temperature range of -55 ℃ to+288 ℃. A lower Z-axis thermal expansion coefficient is particularly important because it can significantly improve the flexibility of system design, reduce size changes caused by temperature changes, and maintain the stability and reliability of the circuit. This feature is particularly important for electronic devices operating in high-temperature environments, ensuring that the circuit can maintain good performance even under high temperature conditions.

Kappa 438 has excellent dimensional stability

Kappa 438 PCB achieves excellent dimensional stability, with very small dimensional changes (typical values of -0.003~0.009mm/m), which means that the dimensional changes of the material can be almost negligible in high-temperature environments, ensuring the stability and reliability of the circuit board. This is crucial for electronic devices that require high precision and stability.

Kappa438 has high temperature resistance performance

Due to the use of special amide resin material, Kappa 438 PCB has excellent high temperature resistance. Even in high temperature environments, this material can maintain stable dielectric properties, thermal stability, and mechanical strength, making it very suitable for use in electronic devices that require operation under high temperature conditions, such as communication equipment, radar systems, etc.

Kappa 438 has a low rate of change in dielectric constant with temperature

The dielectric constant of Kappa438 PCB material has an extremely low rate of change with temperature, which means that its dielectric constant will not undergo significant changes in high-temperature environments. This characteristic is crucial for maintaining the stability of circuit signals and reducing losses in signal transmission, ensuring that electronic devices can still maintain good signal transmission performance under high temperature conditions.

Rogers Kappa 438 PCB board performs well in high-temperature environments, making it highly suitable for use in electronic devices that require high-temperature operation, such as communication equipment, radar systems, medical equipment, etc.