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6J21P

Russian cathode-grid pentode designed for wideband RF preamplification and electronic switching circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 350 mA

Description

The 6J21P is a Russian cathode-grid pentode for wideband RF preamplifiers and switching circuits. The source entry was translated to English and processed independently from neighboring partial entries.

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: 350 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: 60000 Ω
Transconductance: 0.0155 S
Max plate voltage: 200 V
Max screen voltage: 200 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.75 W

Promoted ratings and characteristics translated from the filename-designated Russian 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

Nominal heater voltage
6.3 V
Published source value
Nominal heater current
350 mA
Published source value
Transconductance
15500 uS
Published operating point
Plate resistance
60000 Ohm
Published operating point