Rogers PCB Material Dielectric Constant (Dk) Reference Guide: Full List of Standard High Frequency Laminate Grades

Rogers PCB Material Dielectric Constant (Dk) Reference Guide: Full List of Standard High Frequency Laminate Grades

Dielectric constant (Dk, also called relative permittivity) is the core parameter for high frequency PCB material selection, directly determining characteristic impedance control accuracy, signal transmission delay and high-frequency loss performance. As the world's leading high frequency laminate manufacturer, Rogers offers a full range of PTFE and ceramic-filled PCB materials covering Dk values from 2.2 to 10.2, matching different RF, microwave and millimeter-wave application requirements. Below is the complete list of standard Rogers PCB material Dk specifications for design reference.

Full List of Rogers High Frequency Laminate Dielectric Constants

1. RO4000 Series Mid-Range General High Frequency Laminates

The RO4000 series is Rogers' most widely used general-purpose high frequency material line, delivering balanced performance and cost for sub-6GHz RF designs.

RO4350B: Dielectric constant Dk = 3.48 ± 0.05, the industry standard general high frequency grade for 5G base station antennas, power amplifiers and automotive radar.

RO4003C: Dielectric constant Dk = 3.38 ± 0.05, tighter Dk tolerance for higher precision RF circuit designs.

RO4450B: Dielectric constant Dk = 3.54 ± 0.05, dedicated prepreg (bonding sheet) grade for multilayer high frequency PCB lamination, matching RO4350B core materials.

2. RT/duroid Series Ultra-High Frequency PTFE Laminates

The RT/duroid series is made of pure PTFE base material with ultra-low loss performance, designed for microwave and millimeter-wave high-end applications.

RT5880: Dielectric constant Dk = 2.2 ± 0.02, ultra-low Dk ultra-low loss grade for millimeter-wave antennas and high-frequency radar systems.

RT6002: Dielectric constant Dk = 2.94 ± 0.04, low Dk high stability grade for precision RF and aerospace communication applications.

RT6006: Dielectric constant Dk = 6.15 ± 0.15, medium-high Dk grade for miniaturized antenna designs requiring higher dielectric constant.

RT6010: Dielectric constant Dk = 10.2 ± 0.25, ultra-high Dk grade for highly miniaturized RF components and antenna miniaturization designs.

3. RO3000/RO3200 Series High Precision RF Laminates

The RO3000 and RO3200 series are ceramic-filled PTFE laminates with tight Dk tolerance, optimized for high-performance commercial and aerospace RF applications.

RO3003: Dielectric constant Dk = 3.00 ± 0.04, high stability low Dk grade for automotive radar and high-frequency communication systems.

RO3203: Dielectric constant Dk = 3.02 ± 0.04, improved RO3003 grade with better thermal conductivity for high-power RF applications.

RO3006: Dielectric constant Dk = 6.15 ± 0.15, medium-high Dk grade for miniaturized filter and antenna designs.

RO3010: Dielectric constant Dk = 10.2 ± 0.3, high Dk grade for compact microwave circuit and coupler designs.

RO3210: Dielectric constant Dk = 10.2 ± 0.5, high thermal conductivity high Dk grade for high-power miniaturized RF components.

Dk Selection Guide for Rogers PCB Materials

For ultra-high frequency millimeter-wave and low-loss requirements: select low Dk materials such as RT5880 (Dk 2.2) to minimize signal transmission loss.

For general sub-6GHz 5G, IoT and automotive radar designs: select mid-range Dk materials around 3.0–3.5, such as RO4350B, RO4003C and RO3003, for balanced performance and cost.

For miniaturized antenna, filter and coupler designs requiring compact size: select high Dk materials such as RT6006 (Dk 6.15), RT6010 (Dk 10.2) and RO3010 (Dk 10.2) to reduce circuit size via higher dielectric constant.

Conclusion

Rogers high frequency PCB materials cover a full range of Dk values from 2.2 to 10.2, with different tolerance grades to match diverse application requirements from consumer RF to aerospace-grade high reliability designs. Accurate matching of Dk value and tolerance is the first step in high frequency PCB material selection to ensure stable impedance control and expected high frequency performance.

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