The 5780-C7 from Holland Shielding Systems is a Microwave Absorber with Frequency 1 MHz to 18 GHz, Thickness 0.003/0.004/0.0086 mm/0.08/0.12/0.22 mm, Thickness 0.003/0.004/0.0086 mm, Thickness (mm) 0.08/0.12/0.22 mm, Magnetic Permiablitity 140 µ’. Tags: EMI Absorber. More details for 5780-C7 can be seen below.