The CB Series 0.090″ thick RF absorber material is an iron-loaded silicone elastomer optimized for the S and C bands (3.5 to 6.0 GHz). Designed for superior cavity resonance reduction, it covers the lower end of the CB Series frequency range, overlapping with the upper end of the LS Series.

At 0.090″ thick, this is one of the thicker CB Series options, providing strong absorption at lower C-band frequencies commonly encountered in LTE, CBRS, and lower Wi-Fi bands. Thinner options at 0.080″, 0.070″, 0.060″, and 0.040″ shift peak absorption to higher frequencies. A thicker option at 0.100″ extends coverage further into S band. For applications requiring a non-silicone alternative, consider the US Series acrylic elastomer.

Key Specifications
Base material: Iron-loaded silicone
Thickness: 0.090″ (2.286 mm)
Frequency range: 3.5 to 6.0 GHz (C Band)
Operating temperature: -55 to 200°C
Density: 4.030 g/cm³
Adhesive: PSA backing available (3M 9485PC)
Compliance: RoHS/REACH compliant, halogen-free

Common Applications
Cavity resonance suppression in shielded enclosures, near-field noise suppression, surface current reduction, and EMC compliance in LTE base stations, CBRS equipment, Wi-Fi access points, telecom infrastructure, and industrial wireless systems operating in the lower C band.

Need a custom die-cut shape, a thickness not listed here, or a large production quantity? Contact our engineering team for a quote. Custom die-cut parts with PSA backing ship in 2 to 3 weeks.

For complex permeability and permittivity data for electromagnetic simulation (HFSS, CST, COMSOL), email us or give us a call at 855-785-5660.