8033

High-power triode designed for pulse-modulator service, with manufacturer ratings centered on short-duration high-voltage, high-current pulses rather than continuous RF or audio operation. Its intended role is switching or modulating pulsed power in professional equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 15.5 V / 420 A

Description

Very-high-power water-cooled triode for RF, audio modulation, and pulsed service.

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: 15.5 V
Nominal heater current: 420 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

Amplification factor: 16
Max plate voltage: 65000 V
Max plate dissipation: 225000 W
Max cathode current: 600 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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Filament Voltage
15.5 V
Filament Current
420 A
Amplification Factor
16

Capacitance

Grid-Plate Capacitance
110 pF
Grid-Filament Capacitance
140 pF
Plate-Filament Capacitance
6 pF

Other

Maximum Plate Voltage
65000 V
Maximum Plate Dissipation
225000 W
Maximum Signal DC Plate Current
20 A
ClassB audio
Peak Plate Pulse Supply Voltage
45000 V
RF pulsed
Pulse Cathode Current
600 A
Modulator pulsed
Pulse Power Output
19.8 MW