6N9S

Double triode with separate cathodes of indirect heating in a glass shell with an octal base.

Designed to amplify low frequency voltage.

The 6N9S double triode is used in preliminary low-frequency amplification stages, phase inverter stages 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 6N9S:

- lamp height - 85 mm;

   - lamp diameter - 33 mm.

Weight no more than 34 g.

Operating time not less than 1500 hours.

Foreign analogues of the 6N9S lamp: 6SL7GT, 6SL7GTA, 6SL7GTY, 6SL7GTL, ECC35, 6113, 6188.

Deciphering the marking of a double triode:

6Н9С

6 - a number indicating the rounded value of the lamp filament voltage in volts;

H - a letter that determines the type of lamp: H - double triode;

9 - the number of the serial number of the development of this type of lamp;

C - a letter characterizing the structural design: C - a lamp in a glass shell, with or without a base, with a bulb diameter of more than 22.5 mm.

Technical characteristics and electrical parameters of the lamp 6N9S:

• Filament voltage 6.3 ±0.6 V

• Glow current 300 ±25 mA

• Nominal anode voltage 250 V

• Anode voltage limit 275 V

• Nominal grid voltage -2 V

• Anode current 2.3 ±0.9 mA

• The highest power dissipated at the anode 1.1 W

• Maximum voltage between cathode and heater 100 V

• Maximum leakage current between cathode and heater 20 ?A

• Slope 1.6 ±0.4 mA/V

• Internal resistance 44 kOhm

• Gain 70 ±15

• The highest resistance in the circuit of the first grid 500 kOhm

• Input capacitance of the first triode 3 pF

• Input capacitance of the second triode 3.4 pF

• Output capacitance of the first triode 3.8 pF

• Output capacitance of the second triode 3.2 pF

• Glass design with octal base