3PB Solutions designs and manufactures RF absorber materials (also called microwave absorber materials) for cavity resonance suppression, near-field RFI mitigation, EMC compliance, free-space signal isolation, and PIM mitigation. The full product line covers 0.5 to 100+ GHz across five material categories: magnetically loaded elastomer RF absorber sheets, broadband RF absorber foam, reticulated foam, dispensable RF absorbers, and thermal pad RF absorbers.
All RF absorbing materials are manufactured in-house in the United States. Standard and custom sheet sizes are available with pressure-sensitive adhesive (PSA) backing and custom die-cutting. Complex permeability and permittivity data is available for electromagnetic simulation in HFSS, CST, and COMSOL. Standard orders ship in 2 to 3 weeks. Overnight shipping is available for engineers who need RF absorber material at the test lab immediately.
RF Absorber Product Series
Elastomer sheets, foam, dispensable, and thermal pad RF absorbers from 0.5 to 100+ GHz
Why Engineers Choose 3PB Solutions
US Manufacturer
In-house compounding, sheet production, die-cutting, and fabrication. Full lot traceability on every order.
Short Lead Times
Standard and custom materials ship within 2-3 weeks, including die-cut parts. Compare to 8 to 10 weeks from larger suppliers.
Overnight Samples
At the test lab? Call 855-785-5660 or email sales@3pbsolutions.com and we’ll ship candidate materials overnight.
Non-Silicone Options
The US Series acrylic, non-silicone RF absorber elastomer provides attenuation with zero silicone oil migration for sensitive applications.
Custom Formulations
Non-standard thicknesses, loading levels, and die-cut geometries are standard service, not special orders.
Simulation Data
Complex permeability and permittivity data available for all elastomer products. Import directly into HFSS, CST, or COMSOL.
RF Absorber Learning Center
RF Absorbers for Cavity Resonance: A Practical Guide
Short version: Cavity resonance is what happens when a shielded enclosure amplifies EMI instead of containing it. RF absorbers fix it by dissipating resonant energy as heat, lowering the Q factor of the cavity. The most cost-effective approach is to apply absorber material to every
Eccosorb™ Alternatives: RF Absorbers at Lower Cost
Short version: 3PB Solutions designs and manufactures RF absorber materials from 0.5 to 40 GHz that cross-reference directly to Eccosorb™ products. Lower cost, 2 to 3 week lead times, custom thicknesses and formulations as standard service. Keep reading for the full cross-reference table and product
Types of RF Absorber Materials: An Engineer’s Selection Guide
Short version: RF absorbers, also called microwave absorbers, are not interchangeable. RF absorber materials include elastomer sheets, foam, ferrite tiles, dispensable silicone, and thermal pads. Each works through a different loss mechanism and performs best in a specific frequency range and form factor. Picking
Dispensable RF Absorbers: When Die-Cut Sheets Won’t Cut It
Short version: If you're placing die-cut RF absorber pads into shielded cavities by hand, dispensable absorbers can eliminate that labor entirely. The 3PB Solutions AC-001 Series is a liquid silicone absorber covering 1.0 to 40.0 GHz that can be dispensed by hand or with automated
Ready to Evaluate RF Absorber Materials?
Request a free sample kit with materials matched to your frequency range and application, or browse our online shop for standard sheet sizes with pricing and calculated shipping.
Quick Contact: Call 855-785-5660 or email sales@3pbsolutions.com
