6S40P is a high voltage triode, used in old tube TV sets as CRT voltage stabilizer. It is interesting as a possible X-ray source.

Name: 6S40P;

Type: High voltage triode;

Application: Application as high voltage regulator;

Cathode type: oxide, direct heating;

Envelope: glass, miniature;

Mass, g: 22;

Filament voltage, V: 6,3;

Filament current, A: 0,155-0,185;

Anode voltage, V: 20000;

Anode power, W: 6;

Steepness, mA/V: 0,12-0,28;

Reverse grid current, uA: 0,5;

Gain: 800-2000;

Socket type: rsh8.