QY31000A

External-anode forced-air-cooled UHF power tetrode designed for high-power RF amplification. Its external anode and cooling system permit substantial dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

The Mullard QY31000A is a external-anode forced-air-cooled UHF power tetrode for high-power RF amplification.

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: -
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

Transconductance: 0.02 S
Max plate voltage: 4500 V
Max screen voltage: 600 V
Max plate dissipation: 1500 W

External-anode forced-air-cooled UHF power tetrode for high-power RF amplification.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

Transconductance
20000 uS
RepresentativeSpecifiedOperatingPoint
Plate-Grid Capacitance
0.15 pF
Plate-Filament Capacitance
6 pF
Grid-Filament Capacitance
46 pF

Other

Maximum Operating Frequency
900 MHz
FullOrSpecifiedRatings
Maximum Plate Voltage
4500 V
Maximum Screen Voltage
600 V
Maximum Plate Dissipation
1500 W
RF Output Power
2500 W
RepresentativePublishedOperatingPoint
Maximum Operating Frequency
900 MHz