GU5A

Very-high-power Russian RF transmitting triode for substantial radio-frequency service. Rated for approximately 35 kW plate dissipation and 5 kV plate voltage, emphasizing exceptionally high current and thermal capability for major transmitter or industrial RF installations.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12.6 V / -

Description

High-power RF triode. Extracted from the English electrical and limit-operating tables of the bilingual datasheet.

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: 12.6 V
Nominal heater current: -
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

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 5000 V
Max plate dissipation: 35000 W

English text primary; Russian used only to verify/repair OCR.

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

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Transconductance
12000 to 18000 uS
Amplification Factor
60 to 85

Capacitance

Input Capacitance
19 pF
max
Output Capacitance
0.5 pF
max
Transfer Capacitance
16 pF
max

Other

Minimum Output Power
3.5 kW
12m wavelength
Anode Voltage 30-110MHz
4000 V
Operating Frequency
110 MHz