Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode

GU33B

Forced-air-cooled Russian wideband power tetrode for RF amplification to approximately 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / -

Description

Forced-air-cooled wideband power tetrode to 500 MHz.

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
-
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

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
1500 V
Max screen voltage
400 V
Max plate dissipation
150 W
Max grid dissipation
10 W
Max cathode current
340 mA

English text primary; Russian used only as secondary cross-check.

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

Tetrode

Other

  • Operating Frequency

    500 MHz

  • Maximum Anode Voltage

    1500 V

  • Maximum Grid 2 Voltage

    400 V

  • Maximum Anode Dissipation

    150 W

  • Maximum Grid Dissipation

    10 W

  • Cathode Current Limit

    340 mA

  • Cathode Current Peak Class B

    1 A

  • Output Power at 250 MHz

    150 W

Characteristic

  • Heater/Filament Voltage

    6.3 V