6N8S
Double triode with separate cathodes of indirect heating in a glass shell with an octal base.
Designed to amplify low frequency voltage and work in relaxation circuits.
The 6N8S double triode is used in preliminary low-frequency amplification stages, phase inverter stages, in various pulse circuits, in scanning stages of television receivers and in measuring equipment.
Indirectly heated oxide cathode.
Works in any position.
Produced in glass design.
Socle 8-pin octal with a key.
Overall dimensions of the double triode 6N8S:
   - lamp height - 85 mm;
   - lamp diameter - 33 mm.
Weight not more than 50 g.
Operating time not less than 500 hours.

Technical characteristics and electrical parameters of the 6N8S lamp:

• Filament voltage 6.3 ±0.6 V
• Glow current 600 ± 50mA
• Nominal anode voltage 250 V
• Anode voltage limit 330 V
• Nominal grid voltage -8 V
• Anode current 9 ±3.5 mA
• The highest power dissipated on the anode of the triode 2.75 W
• Maximum DC voltage between cathode and heater 100 V
• Maximum leakage current between cathode and heater 20 μA
• Slope 2.6 ±0.53 mA/V
• Internal resistance 7700 Ohm
• Gain 20.5 ±2.5
• The highest cathode current 20 mA
• The highest resistance in the circuit of the first grid 500 kOhm
• Input capacitance of the first triode 2.8 pF
• Input capacitance of the second triode 3 pF
• Output capacitance of the first triode 0.8 pF
• Output capacitance of the second triode 1.2 pF
• Passing capacitance of the first triode 3.8 pF
• Passing capacitance of the second triode 4 pF
• Glass design