HK354

Low-mu Gammatron power triode with a 150 W tantalum plate for RF and audio power-amplifier service. Rated for approximately 4 kV plate voltage, with relatively low plate resistance optimized for substantial high-current output stages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: GIANT2
Base pins: 4
Nominal heater: 5 V / 10 A

Description

Low-mu Gammatron power triode with a 150-watt tantalum plate, high-voltage capability, and radio-frequency and audio power-amplifier service. The source describes Gammatron construction using tantalum electrode structures and a thoriated-tungsten filament where applicable.

Socket description

Giant 2-contact transmitting-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: GIANT2
Base pins: 4
Nominal heater voltage: 5 V
Nominal heater current: 10 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

Plate resistance: 2800 Ω
Amplification factor: 14
Max plate voltage: 4000 V
Max plate dissipation: 150 W
Max cathode current: 300 mA

Published maximum ratings and characteristics promoted from the datasheet; typical application values remain parameter rows.

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

1944 Heintz and Kaufman

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Filament Voltage
5 V
Filament Current
10 A
Amplification Factor
14
Plate Resistance
2800 ohm
Average Plate Impedance
2800 ohm
Grid-Plate Capacitance
4 pF
InterelectrodeCapacitance
Grid-Filament Capacitance
9 pF
InterelectrodeCapacitance
Plate-Filament Capacitance
0.4 pF
InterelectrodeCapacitance

Other

Normal Plate Dissipation
150 W
Maximum Plate Voltage
4000 V
Maximum Average Plate Current
300 mA
Maximum Average Grid Current
50 mA
RF Maximum Plate Voltage
4000 V
ClassC
Normal Plate Dissipation
150 W