6J35B

Russian dual-control subminiature pentode for RF amplification, frequency conversion, and pulse-forming circuits. Its additional control electrode enables mixing, gating, and pulse functions beyond ordinary amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 127 mA

Description

Dual-control subminiature pentode for RF amplification, conversion, and pulse-forming circuits.

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: 127 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: 0.0031 S
Max plate voltage: 150 V
Max screen voltage: 125 V
Max plate dissipation: 0.9 W
Max screen dissipation: 0.7 W
Max cathode current: 15 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
2 mA
Published Russian-source value; OCR-normalized.
Screen current
6.5 mA
Published Russian-source value; OCR-normalized.
Input capacitance
0.8 pF
Published Russian-source value; OCR-normalized.
Output capacitance
0.9 pF
Published Russian-source value; OCR-normalized.
Transfer capacitance
0.03 pF
Published Russian-source value; OCR-normalized.
Service life
2509 h
Published Russian-source value; OCR-normalized.
Transconductance
1.5 µS
Published Russian-source value; OCR-normalized.
Heater current
512 mA
Nominal/published heater value.