Special Features:

0mftr. Classification: grid and cathode sense resistor; envelope material: aluminum; finish: chromate conversion per mil-c-5541, cl 1a; components: grid resistor 2, cathode resistor 2, thermostats 2, resistor covers, waveguide flange, terminals 2

Properties:

An inclosure, including two or more electrodes, in which a flow of electrons may occur through a vacuum or a contained gas. The electronic conduction takes place either by means of electrons emitted from a cathode or by ionization of the contained gas. Includes phototubes (photoemissive type only), geiger-mueller tubes, traveling wave tubes, cathode ray tubes and microwave tubes (klystron, magnetron, or the like). Excludes items whose primary purpose is to produce light energy. Also excludes photoelectric cell; and semiconductor device (as modified).