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Rectifier - Full Wave ·Rectifier-Rectifier

5U4G

Directly heated full-wave high-vacuum rectifier widely used in substantial power supplies. Its 5 V filament supports approximately 225 mA DC output and high peak-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 5T
Socket code: IO
Base pins: 8
Nominal heater: 5 V / 3 A

Description

Mesh full-wave rectifier electrically identical to 5Z3 apart from socket. The supplied Emission Labs sheet was read for filament data, maximum ratings, representative operating points, gm/rp/mu, output conditions, capacitances, and rectifier filter conditions as applicable.

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: 3 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: 1550 V
Rectifier nominal output current: 225 mA
Rectifier peak forward current: 800 mA
Rectifier forward voltage drop: 58 V

Representative row for identical repeated sections.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1550 V
Rectifier nominal output current: 225 mA
Rectifier peak forward current: 800 mA
Rectifier forward voltage drop: 58 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

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
3 A
Section1
RMS AC voltage per plate maximum
500 V
FullWave
Peak inverse voltage maximum
1400 V
FullWave
DC output current maximum
250 mA
FullWave

Characteristic

Average tube voltage drop
61 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
1550 V
Peak Current per Anode
675 mA
Rectified Current
225 mA
RMS Input per Anode
550 V
RMS Input per Anode
450 V
CapacitorInputFilter
Rectified Current
225 mA
CapacitorInputFilter
Reservoir Capacitor
32 uF
CapacitorInputFilter
RMS Input per Anode
550 V
ChokeInputFilter
Rectified Current
225 mA
ChokeInputFilter
Input Choke Inductance
3 H
ChokeInputFilter

Data set 03

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS Input per Anode
450 V
CapacitorInputFilter
Reservoir Capacitance
32 uF
CapacitorInputFilter
RMS Input per Anode
550 V
ChokeInputFilter
Input Choke Inductance
3 H
ChokeInputFilter
Rectified Current
225 mA

Data set 04

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
3 A
Published condensed-characteristics chart
DC output current maximum
225 mA
FullWave
Peak inverse voltage maximum
1550 V
FullWave
RMS supply voltage per plate maximum
450 V
FullWave
Peak current per plate maximum
800 mA
FullWave

Characteristic

Tube voltage drop
44 V
At 225 mA DC

Data set 05

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

HeaterOrFilamentVoltage
5 V
HeaterOrFilamentCurrent
3 A

Data set 06

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

SteadyStatePeakPlateCurrentPerPlate
675 mA

Data set 07

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak inverse plate voltage maximum
1550 V
AC plate supply voltage per plate
450 V RMS
CapacitorInputFilter
Input capacitor
40 uF
CapacitorInputFilter
DC output current
225 mA
CapacitorInputFilter
DC output voltage at filter input
470 V
CapacitorInputFilter
AC plate supply voltage per plate
300 V RMS
CapacitorInputFilter
Input capacitor
40 uF
CapacitorInputFilter
DC output current
245 mA
CapacitorInputFilter
DC output voltage at filter input
290 V
CapacitorInputFilter
AC plate supply voltage per plate
550 V RMS
ChokeInputFilter
Input choke
10 H
ChokeInputFilter
DC output current
225 mA
ChokeInputFilter
DC output voltage at filter input
440 V
ChokeInputFilter

Characteristics

Heater voltage
5 V
Heater current
3 A

Application

Application
Full-wave power-supply rectifier

Data set 08

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak inverse voltage maximum
1550 V
EachPlate
Steady-state peak plate current maximum
675 mA
EachPlate
AC plate voltage per plate
450 V RMS
FullWave;CapacitorInputFilter
DC output current maximum
225 mA
FullWave;CapacitorInputFilter
Minimum effective plate-supply impedance per plate
75 Ω
CapacitorInputFilter
AC plate voltage per plate
550 V RMS
FullWave;ChokeInputFilter
DC output current maximum
225 mA
FullWave;ChokeInputFilter
Minimum input choke
3 H
ChokeInputFilter

Characteristic

Tube voltage drop at 225 mA per plate
58 V
EachPlate

Data set 09

2026 Emission Labs

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Filament voltage
5 V
Filament current
3 A

Other

Maximum transformer AC voltage
550 V RMS
Maximum DC output current
225 mA
CapacitorInputFilter
Maximum DC output current
265 mA
ChokeInputFilter
Maximum first capacitor
40 uF
CapacitorInputFilter
Repeated peak current
800 mA
One-time transient peak current
4 A