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6J44P

Russian miniature pentode intended for voltage amplification in radio-electronic equipment. Manufacturer documentation identifies it as a compact general signal-amplifier tube rather than a power-output or specialized conversion device.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 550 mA

Description

Miniature pentode for voltage amplification in radio-electronic equipment.

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: 550 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

Max plate voltage: 165 V
Max cathode current: 120 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
25
Published Russian-source value; OCR-normalized.
Input capacitance
1.5 pF
Published Russian-source value; OCR-normalized.
Output capacitance
0.9 pF
Published Russian-source value; OCR-normalized.
Transfer capacitance
0.006 pF
Published Russian-source value; OCR-normalized.
Transconductance
16 µS
Published Russian-source value; OCR-normalized.
Plate current
2 mA
Published Russian-source value; OCR-normalized.
Screen current
15 mA
Published Russian-source value; OCR-normalized.
Transconductance
1.4 µS
Published Russian-source value; OCR-normalized.
Heater voltage
7 V
Nominal/published heater value.
Heater current
40 mA
Nominal/published heater value.