The FFS-0.3-2020T from KITAGAWA INDUSTRIES America, Inc. is a Microwave Absorber with Frequency 1 MHz, Thickness 0.011 Inch/0.3 mm, Thickness 0.011 Inch, Thickness (mm) 0.3 mm, Operating Temperature -40 to 105 Degree C. Tags: Ferrite. More details for FFS-0.3-2020T can be seen below.