Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Rectifier - Half Wave ·Rectifier

RA025B

Directly heated single-anode high-vacuum rectifier diode for high-voltage AC rectifier systems. Rated for approximately 60 kV peak inverse voltage and 250 mA nominal output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
EDISON
Base pins
-
Nominal heater
5.5 V / 9.25 A

Description

Single-anode high-vacuum rectifier diode intended for high-voltage alternating-current rectifiers.

Socket description

Edison screw base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
EDISON
Base pins
-
Nominal heater voltage
5.5 V
Nominal heater current
9.25 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
Plate resistance
500 Ω
Max plate voltage
20000 V
Max plate dissipation
100 W
Rectifier peak inverse voltage
60000 V
Rectifier nominal output current
250 mA
Rectifier peak forward current
850 mA

Published values promoted where clearly readable; identical repeated sections compressed when applicable.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater voltage

    5.5 V

    Published nominal value or midpoint of published range

  • Heater current

    9.25 A

    Published nominal value or midpoint of published range

Data set 02

1966 Tesla Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage option

    5 V

    Supplied by customer request

  • Heater current

    10 A

    For 5 V version

  • Heater voltage option

    6 V

    Supplied by customer request

  • Heater current

    8.5 A

    For 6 V version

Characteristic

  • Minimum emission current

    1.2 A