TH338

Forced-air-cooled planar high-gain power triode for linear television-translator amplifiers. Roughly kilowatt-class plate dissipation provides substantially greater RF output than smaller translator-service planar triodes.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 5.5 A

Description

Forced-air-cooled planar high-gain triode for linear TV translator amplifiers.

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: 5.5 A
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: 2800 V
Max plate dissipation: 1200 W
Max cathode current: 2.5 A

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

1972 Thomson CSF

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Operating Frequency
1000 MHz
Maximum Anode Voltage
2800 V
Maximum Anode Dissipation
1200 W
Maximum/Peak Cathode Current
2.5 A
Typical Gain
16 dB
780 MHz
Peak Video Power
220 W
TV translator

Characteristic

Heater/Filament Voltage
6.3 V
Heater/Filament Current
5.5 A

Capacitance

Grid-Anode Capacitance
7.7-8.7 pF
Grid-Cathode Capacitance
7.7-8.7 pF
Cathode-Anode Capacitance
1.6 pF