The AF Series Reticulated Foam 0.375″ thick RF absorber is the thinnest standard option in the 3PB Solutions line of tapered, carbon-loaded reticulated foam absorbers. The carbon loading is graded from light at the front face to heavy at the back, creating an impedance-matched entry that minimizes reflection, with the open-cell structure scattering the wave to extend its path through the lossy material. Like all reticulated foam, it delivers its rated performance when installed on a conductive surface.

At 0.375″ thick, this material works from 10 GHz to above 100 GHz, providing -20 to -40 dB attenuation in the lowest-profile reticulated option available. It is the right choice for X-band and above: mmWave test setups, Ku/Ka-band antenna measurement, and reflective surface treatment where headroom is minimal. When the operating band reaches lower, step up to the 0.500″ option (from 8 GHz) or the 0.750″ option (from 5 GHz).

Key Specifications
Base material: Open-cell reticulated polyurethane foam, tapered carbon loading
Thickness: 0.375″ (9.525 mm)
Frequency range: 10 GHz to above 100 GHz
Attenuation: -20 to -40 dB on a conductive backing
Operating temperature: -45 to +120°C
Sheet sizes: 24″ x 24″ and 12″ x 12″
Backing options: Conductive foil ground plane, 3M 9485PC PSA backing, or both
Compliance: Halogen-free, RoHS/REACH compliant

Common Applications
mmWave and microwave test setups, Ku-band and Ka-band antenna measurement, minimizing reflections from fixtures and equipment surfaces above 10 GHz, and space-constrained installations where a low-profile alternative to pyramidal absorbers is required.

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

For reflectivity performance curves by thickness and frequency, see the AF Series Reticulated datasheet, or email us or give us a call at 855-785-5660.