Russian 6E5P audiophile tetrode tube. Made in USSR, Reflektor Factory for military equipments ("OTK", military rhombus stamped).
Name: 6E5P;
Type: tetrode;
Application: HF voltage amplification;
Cathode type: oxide, indirect heating;
Envelope: glass, miniature;
Mass, g: 20;
Filament voltage, V: 6,3;
Filament current, A: 0,56-0,64;
Anode voltage, V: 150;
Anode current, A: 0,033-0,053;
Anode power, W: 8,3;
Grid2 voltage, V: 150;
Steepness, mA/V: 24-37;
Reverse grid current, uA: 0,5;
Microphnic noise, mV: 120.
NEW, NOS and never used before!