All done under one roof.

In a world where few manufacturers have the capability to keep EMI shielding and thermal products made under one roof, the latest RF & microwave absorber line completes our advanced product offering.

Our absorbers are offered in the form of automated dispensing epoxy and cavity resonance pads. Both options offer quick-turn prototypes.

 
 
 

Dispensable Epoxy Absorbers

The automatically dispensed absorbers effectively reduce RF signals, suppress standing waves, and minimize RF noise. These epoxy-based absorbers adhere securely to metal surfaces, providing a permanent solution that eliminates the need for die-cutting or tape. With low outgassing properties, they meet NASA's stringent outgassing requirements when cured for an extended period. Additionally, they are electrically comparable to our cavity resonance sheet absorber products.

Our epoxy absorber comes in Commercial and High Performance grades to suit your needs:

CR-DE-2 CG Absorber Data Sheet

CR-DE-3 HP Absorber Data Sheet

 

Cavity Resonance Absorber Pads

Our absorber pads survive outdoor exposure and have a wide working temperature range. Designed to be flexible, the absorber pads can be cut and fitted to compound curves. In addition, they have low outgassing and are RoHS compliant and halogen free. The absorber pads are a great cost-effective solution.

Our absorber pads range from Commercial to High Performance grades. Contact our sales team to learn which one best suits your product.

CR-SS-2 CG Absorber Data Sheet

CR-SS-3 HP Absorber Data Sheet

 
 

get down to the details

Click on any part number to view the data sheet.

 
 
Typical Properties DISPENSABLE EPOXY ABSORBERS CAVITY RESONANCE ABSORBER PADS
Part Number CR-DE-2 Commercial Grade CR-DE-3 High Performance CR-SS-2 Commercial Grade CR-SS-3 High Performance
Thickness Minimum 0.5 mm Minimum 0.5 mm 0.25-2.00 mm 0.25-2.00 mm
Color Dark Gray Dark Gray ---
Density 3.11 g/cm³ 4.2 g/cm³ 3.51 g/cm³ 4.30 g/cm³
Softness 65 Shore A 70 Shore A 60 Shore A 45 Shore A
Operatering Temperature -55 to 125 °C -55 to 125 °C -65 to 200 °C -65 to 200 °C
Flammability Rating UL 94 HB UL 94 HB UL94V-0 UL94V-0
 
 
unsplash-image-G9i_plbfDgk.jpg

 Articles on RF & Microwave Absorbers

Discover the latest innovations, trends, and insights in RF & microwave absorbers. Stay up-to-date with expert knowledge and industry developments!


Technical FAQ

Here are a few commonly asked engineering and application questions about RF and microwave absorbers:

  • An RF absorber is a material designed to absorb radio frequency and microwave energy to reduce reflections and electromagnetic interference (EMI).

  • Common materials include carbon-loaded foams, silicone rubbers, ferrite ceramics, and composites engineered for specific frequency ranges and absorption characteristics.

  • RF absorbers are used in aerospace, defense, telecommunications, electronics manufacturing, and testing environments to control EMI and improve signal integrity.

  • TennMax provides a range of RF absorbers including flexible silicone sheets, molded gaskets, and custom form-in-place (FIP) solutions tailored to your application.

  • Consider frequency range, absorption efficiency, mechanical properties, environmental conditions, and form factor. TennMax experts assist in selecting or custom-designing the ideal absorber.

 
 
 

get in touch

We’re friendly and available to chat. Reach out to us anytime and we’ll happily answer your questions.

 
Thermal Module - HP2_Web.png