Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage Pentode - High Frequency (single) ·Pentode

6J39GV

High-reliability Russian pentode designed for high-frequency voltage amplification. Manufacturer documentation emphasizes dependable RF signal-amplifier operation, distinguishing it from ordinary general-purpose pentodes without indicating a separate power function.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 440 mA

Description

High-reliability pentode for high-frequency voltage amplification.

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
440 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.029 S
Max plate voltage
200 V
Max screen voltage
125 V
Max plate dissipation
3.3 W
Max screen dissipation
1 W
Max cathode current
60 mA

Values promoted where clearly identifiable from Russian source.

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

Pentode

Characteristic

  • Plate current

    7.5 mA

    Published Russian-source value; OCR-normalized.

  • Screen current

    10 mA

    Published Russian-source value; OCR-normalized.

  • Transconductance

    9 mA

    Published Russian-source value; OCR-normalized.

  • Plate current

    1.85 mA

    Published Russian-source value; OCR-normalized.

  • Screen current

    0.55 mA

    Published Russian-source value; OCR-normalized.

  • Transconductance

    2 µS

    Published Russian-source value; OCR-normalized.

  • Plate resistance

    200 kΩ

    Published Russian-source value; OCR-normalized.

  • Amplification factor

    4.3

    Published Russian-source value; OCR-normalized.

  • Heater voltage

    6.3 V

    Nominal/published heater value.

  • Heater current

    30 mA

    Nominal/published heater value.