The AF Series Reticulated Foam 1.250″ thick RF absorber is the thickest 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 1.250″ thick, this material works from 4 GHz to above 100 GHz with -20 to -40 dB attenuation and the deepest absorbing volume in the line, providing the most performance margin at the bottom of the band. It is the choice for demanding range and chamber work where C-band performance headroom matters more than profile. When depth is constrained, the 1.000″ option reaches the same 4 GHz minimum in a quarter inch less material.

Key Specifications
Base material: Open-cell reticulated polyurethane foam, tapered carbon loading
Thickness: 1.250″ (31.750 mm)
Frequency range: 4 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
Outdoor test ranges and antenna measurement facilities, C-band through mmWave absorption with maximum performance margin, radar cross-section test environments, and reflective surface treatment where the best flat-sheet reflection performance in the line 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.