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HK253

High-vacuum half-wave rectifier with thoriated-tungsten filament for high inverse voltage without mercury-vapor warm-up. Its heavy filament supports substantial professional power conversion.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

High-vacuum half-wave rectifier with thoriated-tungsten filament, high inverse-voltage capability, close plate spacing, and no mercury-vapor warm-up delay. The source describes Gammatron construction using tantalum electrode structures and a thoriated-tungsten filament where applicable.

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: 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 15000 V
Rectifier nominal output current: 350 mA
Rectifier peak forward current: 3 A

High-vacuum half-wave rectifier ratings promoted from the published electrical data.

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

Rectifier

Characteristic

Filament Voltage
5 V
Filament Current
10 A

Other

Maximum Average Plate Current
350 mA
Maximum Peak Inverse Voltage
15000 V
Maximum Peak Plate Current
3 A
Maximum Average Plate Current
350 mA