The PPA10 Series from Aeroflex / Inmet are thin film flanged attenuators that operates from DC to 4 GHz. They are available in a number of attenuation configurations from 1 to 20 dB. The attenuators can handle up to 10 Watts of power and have a VSWR of 1.3:1. They use a Beryllium Oxide substrate with an Alumina Ceramic cover and Nickle Plated Mounting Flanges. The attenuators are matched to 50 Ohms and can operate at a temperature from -55 to +150 C degrees.