5Y4G

Directly heated full-wave high-vacuum rectifier for general power-supply service. Its five-volt filament and moderate current capability suit conventional receiver and amplifier supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 5Q
Socket code: IO
Base pins: -
Nominal heater: 5 V / 2 A

Description

Full-wave directly heated high-vacuum rectifier.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

5Q - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN3P1	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending; preserve source designation P1	Unverified EIA Base Connections, printed page 127, 5Q
PIN5P2	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending; preserve source designation P2	Unverified EIA Base Connections, printed page 127, 5Q
PIN7F	—	F — Filament EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5Q
PIN8F	—	F — Filament EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5Q

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1400 V
Rectifier nominal output current: 125 mA
Rectifier peak forward current: 375 mA
Rectifier forward voltage drop: 60 V

Published full-wave rectifier ratings; repeated identical diode sections compressed.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1400 V
Rectifier nominal output current: 125 mA
Rectifier peak forward current: 375 mA
Rectifier forward voltage drop: 60 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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Heater/filament voltage
5 V
Section1
Heater/filament current
2 A
Section1
RMS AC voltage per plate maximum
550 V
FullWave
Peak inverse voltage maximum
1500 V
FullWave
DC output current maximum
135 mA
FullWave
Peak plate current maximum
300 mA
FullWave
RMS AC voltage per plate maximum
400 V
CondenserInputFilter
Peak inverse voltage maximum
1100 V
CondenserInputFilter
Peak plate current maximum
350 mA
CondenserInputFilter
DC output current maximum
110 mA
CondenserInputFilter
RMS AC voltage per plate maximum
550 V
ChokeInputFilter;20HMinimum
Peak inverse voltage maximum
1500 V
ChokeInputFilter;20HMinimum
Peak plate current maximum
300 mA
ChokeInputFilter;20HMinimum
DC output current maximum
135 mA
ChokeInputFilter;20HMinimum

Characteristic

Average tube voltage drop
80 V
FullWave

Data set 02

1948 Brimar Radio Valve Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak Inverse Voltage
1400 V
Peak Current per Anode
375 mA
Rectified Current
125 mA
RMS Input per Anode
350 V
Reservoir Capacitor
32 uF
CapacitorInputFilter

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Maximum RMS supply voltage per plate
350 V
FullWave
Maximum DC output current
125 mA
FullWave
Maximum peak inverse voltage
1400 V
FullWave
Maximum peak current per plate
375 mA
FullWave

Characteristic

Tube voltage drop
60 V
At 125 mA DC output