6S28B-V Russian tiny HF triode tube. NEW, NOS and never used before!

Name: 6S28B-V;

Type: HF triode;

Application: HF voltage amplification;

Cathode type: oxide, indirect heating;

Envelope: glass, miniature;

Mass, g: 5;

Filament voltage, V: 6,3;

Filament current, A: 0,28-0,34;

Anode voltage, V: 90;

Anode current, A: 0,006-0,016;

Anode power, W: 1,3;

Steepness, mA/V: 12,0-22,0;

Reverse grid current, uA: 0,5;

Microphonic noise, mV: 60;

Gain: 30,0-55,0;

Socket type: flexible.