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Rectifier - Full Wave ·Rectifier-Rectifier

25Y5

Indirectly heated full-wave rectifier and voltage-doubler tube for receiver power supplies. Its 25 V heater construction provides approximately 700 V peak inverse-voltage capability and 42 mA nominal rectified output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
6E
Socket code
IO
Base pins
6
Nominal heater
25 V / 300 mA

Description

Full-wave rectifier and voltage-doubler tube.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6E
Socket code
IO
Base pins
6
Nominal heater voltage
25 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6E - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
700 V
Rectifier nominal output current
42 mA
Rectifier max heater-cathode voltage
350 V

Published maximum ratings, representative operating conditions, rectifier service data, and capacitance columns reviewed.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
700 V
Rectifier nominal output current
42 mA
Rectifier max heater-cathode voltage
350 V

Second physical rectifier section; electrical properties populated from corresponding identical section.

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

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • HeaterOrFilamentVoltage

    25 V

  • HeaterOrFilamentCurrent

    300 mA

Other

  • RMSInputPerAnode

    250 V

SECTION 2

Rectifier

Characteristic

  • HeaterOrFilamentVoltage

    25 V

  • HeaterOrFilamentCurrent

    300 mA

Other

  • RMSInputPerAnode

    250 V

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Application

  • Service

    Full-wave rectifier / voltage doubler

SECTION 2

Rectifier

Application

  • Service

    Full-wave rectifier / voltage doubler

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Heater/filament voltage

    25 V

    Published heater/filament rating

  • Heater/filament current

    300 mA

    Published heater/filament rating

Other

  • DC output current

    42 mA

    RectifierDoubler

  • Peak inverse voltage

    700 V

    RectifierDoubler

  • RMS supply voltage

    250 V

    RectifierDoubler

SECTION 2

Rectifier

Characteristic

  • Heater/filament voltage

    25 V

    Published heater/filament rating

  • Heater/filament current

    300 mA

    Published heater/filament rating

Other

  • DC output current

    42 mA

    RectifierDoubler

  • Peak inverse voltage

    700 V

    RectifierDoubler

  • RMS supply voltage

    250 V

    RectifierDoubler