The exhibit is a small disc seal triode very similar to the DET22. The heater and cathode are opposite the main envelope. The grid has a circular connection to the flat internal metal mesh. The anode is Copper and has a flat surface facing the grid and positioned very close to it.

The planar envelope is 15 mm in diameter and, overall is 60 mm tall.

This exhibit was last updated on 06 November 2006