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Rectifier - Full Wave ·Rectifier-Rectifier

5AR4

Glass-octal full-wave high-vacuum rectifier for television receivers and other equipment with high DC requirements. Indirect heating, substantial current capability, and relatively low forward drop suit demanding power supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 5DA
Socket code: IO
Base pins: 5
Nominal heater: 5 V / 1.9 A

Description

Glass octal type used power supplies of television in receivers having high dc requirements. Outlines section, 19D; requires octal socket. This type may be supplied with pins 3, 5, and 7 omitted. Vertical mounting is pre- ferred, but horizontal mounting is permissible if pins 2 and 4 are in vertical plane. It is especially important that this tube, like other power-handling tubes, be ade- quately ventilated.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5DA
Socket code: IO
Base pins: 5
Nominal heater voltage: 5 V
Nominal heater current: 1.9 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5DA - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IC	—	IC EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA
PIN2H	—	H — Heater EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA
PIN42P	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA
PIN51P	A	P — Plate (Anode) EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA
PIN8K	A	K — CathodeGroup 5DA8 EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA
PIN8H	—	H — HeaterGroup 5DA8 EIA chart transcription; manufacturer corroboration pending	Unverified EIA Base Connections, printed page 127, 5DA

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1700 V
Rectifier nominal output current: 250 mA
Rectifier peak forward current: 825 mA
Rectifier forward voltage drop: 17 V

Representative row for two identical rectifier sections; transient peak current 3.7 A for 0.2 s.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1700 V
Rectifier nominal output current: 250 mA
Rectifier peak forward current: 825 mA
Rectifier forward voltage drop: 17 V

Second physical rectifier section; electrical properties populated from applicable published ratings.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Maximum AC supply plate-to-plate voltage RMS
1100 V
Published source value
Maximum capacitor-input filter capacitance
60 uF
Published source value
DC output current, capacitor-input filter
250 mA
CapacitorInputFilter
DC output current, choke-input filter
250 mA
ChokeInputFilter

SECTION 2

Rectifier

Other

Maximum AC supply plate-to-plate voltage RMS
1100 V
Published source value
Maximum capacitor-input filter capacitance
60 uF
Published source value
DC output current, capacitor-input filter
250 mA
CapacitorInputFilter
DC output current, choke-input filter
250 mA
ChokeInputFilter

Data set 02

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

AC supply voltage per plate
550 V RMS
CapacitorInputFilter
DC output current
250 mA
CapacitorInputFilter
Maximum input capacitor
60 µF
CapacitorInputFilter
DC output voltage
610 V
CapacitorInputFilter

SECTION 2

Rectifier

Other

AC supply voltage per plate
550 V RMS
CapacitorInputFilter
DC output current
250 mA
CapacitorInputFilter
Maximum input capacitor
60 µF
CapacitorInputFilter
DC output voltage
610 V
CapacitorInputFilter

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

AC supply voltage per plate
550 V RMS
FullWave
DC output current maximum
250 mA
FullWave
Maximum input capacitor
60 µF
CapacitorInputFilter
DC output voltage
610 V
FullWave

SECTION 2

Rectifier

Other

AC supply voltage per plate
550 V RMS
FullWave
AC supply voltage per plate
550 V RMS
FullWave
DC output current maximum
250 mA
FullWave
DC output current maximum
250 mA
FullWave
Maximum input capacitor
60 µF
CapacitorInputFilter
DC output voltage
610 V
FullWave

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

AC Plate Supply Voltage Per Plate
450 V
CapacitorInputFilter
TotalPlateSupplyResistancePerPlate
160 ohm
CapacitorInputFilter
DC Output Current
225 mA
CapacitorInputFilter
DC Output Voltage
475 V
CapacitorInputFilter
AC Plate Supply Voltage Per Plate
450 V
ChokeInputFilter
Filter Input Choke
10 H
ChokeInputFilter
DC Output Current
250 mA
ChokeInputFilter
DC Output Voltage
375 V
ChokeInputFilter

SECTION 2

Rectifier

Other

AC Plate Supply Voltage Per Plate
450 V
CapacitorInputFilter
AC Plate Supply Voltage Per Plate
450 V
CapacitorInputFilter
TotalPlateSupplyResistancePerPlate
160 ohm
CapacitorInputFilter
TotalPlateSupplyResistancePerPlate
160 ohm
CapacitorInputFilter
DC Output Current
225 mA
CapacitorInputFilter
DC Output Current
225 mA
CapacitorInputFilter
DC Output Voltage
475 V
CapacitorInputFilter
AC Plate Supply Voltage Per Plate
450 V
ChokeInputFilter
Filter Input Choke
10 H
ChokeInputFilter
DC Output Current
250 mA
ChokeInputFilter
DC Output Voltage
375 V
ChokeInputFilter

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

AC Plate-to-Plate Supply Voltage (rms)
550 volts
Published value from supplied target entry
EffectivePlate-Supply Impedance per Plate
200 ohms
Published value from supplied target entry
Average Output Current
160 mA
Published value from supplied target entry
Average Output Current
225 mA
Published value from supplied target entry
Tube Voltage Drop for plate current of
225 mA
Published value from supplied target entry

Other

DC Output Voltage at Input to Filter
620 volts
Published value from supplied target entry
DC Output Voltage at Input to Filter
465 volts
Published value from supplied target entry

SECTION 2

Rectifier

Characteristic

AC Plate-to-Plate Supply Voltage (rms)
550 volts
Published value from supplied target entry
EffectivePlate-Supply Impedance per Plate
200 ohms
Published value from supplied target entry
Average Output Current
160 mA
Published value from supplied target entry
Average Output Current
225 mA
Published value from supplied target entry
Tube Voltage Drop for plate current of
225 mA
Published value from supplied target entry

Other

DC Output Voltage at Input to Filter
620 volts
Published value from supplied target entry
DC Output Voltage at Input to Filter
465 volts
Published value from supplied target entry

Data set 06

2026 Sovtek

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Application

RectificationType
FullWave text
Center-tapped midpoint circuit

SECTION 2

Rectifier

Application

RectificationType
FullWave text
Center-tapped midpoint circuit