Skip to main content

Power - Triode (over 1000V 100W) ·Triode

GU45A

High-power Russian RF triode for transmitting and radio-frequency power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.8 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
7.8 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
8400 V
Max plate dissipation
20000 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

    19500 to 28500 uS

  • Amplification Factor

    19 to 25

Capacitance

  • Input Capacitance

    41 pF

    max

  • Output Capacitance

    3 pF

    max

  • Transfer Capacitance

    27 pF

    max

Other

  • Anode Voltage 25-50 MHz

    8400 V

  • Filament Starting Current

    225 A

  • Operating Frequency

    50 MHz