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531

Forced-air-cooled high-voltage transmitting vacuum rectifier for demanding power supplies. Its massive filament, tens-of-kilovolts inverse-voltage capability, and substantial current suit transmitter and industrial systems.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 115 V / 20 A

Description

Forced-air-cooled high-voltage transmitting vacuum rectifier diode.

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: 115 V
Nominal heater current: 20 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: 50000 V
Rectifier nominal output current: 290 mA
Rectifier peak forward current: 750 mA

Published ratings and characteristics promoted where clearly applicable; additional source values retained as section parameters.

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

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater or filament voltage
115 V
Published nominal/representative value
Heater or filament current
20 A
Published nominal/representative value
Required cooling airflow
50 cfm
Approximately; starts with filament voltage

Other

Peak inverse voltage
50000 V
Published source value
Peak forward current
750 mA
Published source value
Average DC plate current
290 mA
Published