5R4G

Directly heated full-wave high-vacuum rectifier for high-voltage power supplies. Its 5 V filament supports approximately 250 mA DC output and exceptionally high peak inverse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 5T
Socket code: IO
Base pins: 8
Nominal heater: 5 V / 2 A

Description

Directly heated full-wave high-vacuum rectifier of the 5R4 family, rated for high peak-inverse voltage.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5T
Socket code: IO
Base pins: 8
Nominal heater voltage: 5 V
Nominal heater current: 2 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5T - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5T
PIN2F	—	F — Filament EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5T
PIN4P1	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending; preserve source designation P1	Unverified EIA Base Connections, printed page 127, 5T
PIN6P2	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending; preserve source designation P2	Unverified EIA Base Connections, printed page 127, 5T
PIN8F	—	F — Filament EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5T

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 2800 V
Rectifier nominal output current: 250 mA
Rectifier peak forward current: 650 mA
Rectifier forward voltage drop: 67 V

Published full-wave rectifier ratings promoted from the printed chart; supply-voltage and voltage-drop test conditions retained as parameters.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 2800 V
Rectifier nominal output current: 250 mA
Rectifier peak forward current: 650 mA
Rectifier forward voltage drop: 67 V

Second physical rectifier section; promoted electrical properties populated from 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Filament/heater voltage
5 V
Published condensed-characteristics chart
Filament/heater current
2 A
Published condensed-characteristics chart
DC output current maximum
250 mA
FullWave
Peak inverse voltage maximum
2800 V
FullWave
RMS supply voltage per plate maximum
750 V
FullWave
Peak current per plate maximum
650 mA
FullWave

Characteristic

Tube voltage drop
67 V
At 250 mA DC

SECTION 2

Rectifier

Other

Filament/heater voltage
5 V
Published condensed-characteristics chart
Filament/heater current
2 A
Published condensed-characteristics chart
DC output current maximum
250 mA
FullWave
Peak inverse voltage maximum
2800 V
FullWave
RMS supply voltage per plate maximum
750 V
FullWave
Peak current per plate maximum
650 mA
FullWave

Characteristic

Tube voltage drop
67 V
At 250 mA DC