The TF Series 4.0 GHz tuned frequency RF absorber is an iron-loaded silicone elastomer engineered for maximum attenuation at 4.0 GHz. Unlike broadband absorbers that cover a range of frequencies, TF Series materials are formulated with a specific thickness and loading level to deliver peak absorption at a single target frequency.

At 0.078″ thick with a density of 4.470 g/cm³, this material targets the lower C band where 4.0 GHz resonances are common in mid-sized shielded enclosures. Use this material when you have identified a specific 4.0 GHz resonance or emission and need maximum attenuation at that frequency. For broadband C-band coverage, see the CB Series or LS Series. For applications requiring a non-silicone alternative, consider the US Series acrylic elastomer.

Key Specifications
Base material: Iron-loaded silicone
Thickness: 0.078″ (1.981 mm)
Tuned frequency: 4.0 GHz
Operating temperature: -55 to 200°C
Density: 4.470 g/cm³
Adhesive: PSA backing available (3M 9485PC)
Compliance: RoHS/REACH compliant, halogen-free

Common Applications
Narrowband cavity resonance suppression at 4.0 GHz, targeted EMI mitigation in Wi-Fi, sub-6 GHz 5G, and C-band systems where peak absorption at a specific frequency is required rather than broadband coverage.

Need a custom tuned frequency 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.