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6ZH38PEV

Russian pentode documented with translated manufacturer electrical characteristics and ratings. The available source establishes conventional pentode operation but does not provide sufficiently explicit application or cutoff terminology to support a narrower functional classification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 190 mA

Description

Russian pentode vacuum tube. Technical characteristics and ratings are taken from the complete filename-matched source entry.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 190 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

Plate resistance: 175000 Ω
Transconductance: 0.0106 S
Max plate voltage: 300 V
Max screen voltage: 160 V
Max plate dissipation: 3 W
Max screen dissipation: 0.5 W
Max cathode current: 20 mA

Filename-matched Russian source entry only.

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

Characteristics

Heater current
-20 mA
Translated from Russian source; Ток накала, мА. , . , .. ,, «а 19020 190--20
Plate current
-3.5 mA
Translated from Russian source; Ток анода, мА. ‚ .. 12--4 12+-3,5
Screen current
2 mA
Translated from Russian source; Ток 2-й сетки, мА. . . ° .

Other

Heater voltage
7 V
Translated from Russian source; Напряжение накала, В . . . . 5,7—7
Plate voltage
300 V
Translated from Russian source; Напряжение анода, В . . й 300