6S31B

6S31B
6Ń31Á

General

Triode used as a low frequency amplifier
Envelope: subminiature glass.
Mass 4.5 g.

Lead diagram

General characteristics:

Filament (heater) current, mA
220±22

Anode current, mA

40±10

Reverse grid current, mkA

<0.2

Dissipate cathode-heater current, mkA

<20

Mutual conductance, mA/V

18

Gain coefficient

17±5

Vibration noise (at R_A=2 kΩ), mV

<15

Inter electrode capacitance, pF:

input

4.1±0.9

output

<1.5

transfer
3.8

Operation time, h

>2000

Limited operating values:

Filament voltage, V

5.7 to 7.0

Anode voltage, V

100

Cathode – heater voltage, V

200

Cathode current, mA

60

Anode dissipation, W

2.5

Resistance in grid circuit, MΩ

1

Tube temperature, ⁰C

220

Operating environmental conditions :

Acceleration of vibration loads, g

15

Acceleration of multiple impacts, g

150

Acceleration of single impact, g

500

Continuous acceleration, g

100

Ambient temperature, °?

–60 to +125

Relative humidity at up to 40°C, %

98

Plate-grid and plate curves of triode

Plate curves Plate-grid curves

Filament (heater) current, mA					220±22
Anode current, mA					40±10
Reverse grid current, mkA					<0.2
Dissipate cathode-heater current, mkA					<20
Mutual conductance, mA/V					18
Gain coefficient					17±5
Vibration noise (at R_A=2 kΩ), mV					<15
Inter electrode capacitance, pF:
input					4.1±0.9
output					<1.5
transfer					3.8
Operation time, h					>2000

Filament voltage, V	5.7 to 7.0
Anode voltage, V	100
Cathode – heater voltage, V	200
Cathode current, mA	60
Anode dissipation, W	2.5
Resistance in grid circuit, MΩ	1
Tube temperature, ⁰C	220

Acceleration of vibration loads, g	15
Acceleration of multiple impacts, g	150
Acceleration of single impact, g	500
Continuous acceleration, g	100
Ambient temperature, °?	–60 to +125
Relative humidity at up to 40°C, %	98