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Voltage - Triode (single) ·Triode

6S31BR

Russian improved-reliability triode intended for voltage-amplifier service, documented as a specialized variant of the 6S31B family.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 220 mA

Description

Russian triode intended for voltage amplification and/or high-frequency operation, as specified in the source entry.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
220 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Amplification factor
5
Max plate dissipation
2.5 W

Values extracted only from the complete filename-matched Russian entry.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater current

    -22 mA

    Translated from Russian source; OCR line: Ток накала, мА. , . . . . . . . , 220=22 220--22

  • Plate current

    -10 mA

    Translated from Russian source; OCR line: Ток анода, мА 40 Ю 40=-10

  • Transconductance

    188 mA/V

    Translated from Russian source; OCR line: Крутизна характеристики, мАВ . 18-$ 188

  • Transconductance

    5.7 mA/V

    Translated from Russian source; OCR line: Крутизна характеристики при Ов=5,7 В,

  • Amplification factor

    -5

    Translated from Russian source; OCR line: Коэффициент усиления й .. 17і5 17=-5

Other

  • Service life

    5000 h

    Translated from Russian source; OCR line: Наработка, ч . й >2000 > 5000

  • Heater voltage

    -6.6 V

    Translated from Russian source; OCR line: Напряжение накала, В . 5,7—7 — 6-—6,6

  • Plate voltage

    100 V

    Translated from Russian source; OCR line: Напряжение анода, В , 100 100

  • Plate dissipation

    2.5 W

    Translated from Russian source; OCR line: Мощность, рассеиваемая анодом Вт й 2,5 2,5