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Rectifier - Full Wave ·Rectifier-Rectifier

6CA4

Twin-anode full-wave rectifier, also designated EZ81, for receiver and amplifier power supplies. Rated for approximately 1.2 kV peak inverse voltage, 150 mA DC output, and 500 mA peak current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9M
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 1 A

Description

Printed co-designation for the EZ81 twin-anode full-wave rectifier.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
9M
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
1 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9M - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1P1AP — Plate (Anode)

EIA source designation P1; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9M

PIN3KAK — Cathode

EIA source designation K; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9M

PIN4H—H — Heater

EIA source designation H; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9M

PIN5H—H — Heater

EIA source designation H; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9M

PIN7P2BP — Plate (Anode)

EIA source designation P2; manufacturer verification pending

Unverified

EIA Base Connections, printed page 130, 9M

Section ratings

2 physical sections, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
1200 V
Rectifier nominal output current
150 mA
Rectifier peak forward current
500 mA
Rectifier forward voltage drop
20 V
Rectifier max heater-cathode voltage
500 V

Each identical diode; full-wave rectifier

Section 2

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
1200 V
Rectifier nominal output current
150 mA
Rectifier peak forward current
500 mA
Rectifier forward voltage drop
20 V
Rectifier max heater-cathode voltage
500 V

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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Heater/filament voltage

    6.3 V

    Published Amperex table

  • Heater/filament current

    1 A

    Published Amperex table

Other

  • AC supply plate-to-plate

    2x350 V RMS

    Published Amperex table

  • DC output current

    150 mA

    Published Amperex table

  • Input-filter capacitance

    50 uF

    Published Amperex table

  • DC output voltage

    347 V

    Published Amperex table

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage

    6.3 V

  • Heater current

    1 A

  • Plate voltage

    1200 V

    Typical operating conditions

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • AC supply voltage per plate

    350 V RMS

    FullWave

  • DC output current maximum

    150 mA

    FullWave

  • Maximum input capacitor

    50 µF

    CapacitorInputFilter

  • DC output voltage

    347 V

    FullWave

Data set 04

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • MAXIMUM PEAK INVERSE PLATE VOLTAGE

    1200 V

    Maximum Ratings | MAXIMUM PEAK INVERSE PLATE VOLTAGE 1200 VOLTS

  • AC PLATE VOLTAGE PER PLATE. RMS

    350 V

    FullWaveRectifier | AC PLATE VOLTAGE PER PLATE. RMS 25O 3OO 350 VOLTS

  • TOTAL PLATE —SUPPLY RESISTANCE PER PLATE

    240 ohm

    FullWaveRectifier | TOTAL PLATE —SUPPLY RESISTANCE PER PLATE 150 200 240 OHMS

  • DC OUTPUT VOLTAGE AT FILTER INPUT

    347 V

    FullWaveRectifier | DC OUTPUT VOLTAGE AT FILTER INPUT 245 293 347 VOLTS

  • Ilr

    150 mA

    FullWaveRectifier | Ilr 150 MA. OC PER PLATE 2O VOLTS

  • Peak inverse voltage

    1200 V

  • Steady-state peak plate current per plate

    500 mA

  • Transient peak plate current per plate

    1.55 A

    Duration<=0.2s

  • AC plate voltage per plate

    250 V

    CapacitorInputFilter

  • Filter input capacitor

    50 uF

    CapacitorInputFilter

  • Plate-supply resistance per plate

    150 ohm

    ACPlateVoltage=250V

  • DC output current

    150 mA

    CapacitorInputFilter

  • DC output voltage

    245 V

    ACPlateVoltage=250V

  • AC plate voltage per plate

    300 V

    CapacitorInputFilter

  • Plate-supply resistance per plate

    200 ohm

    ACPlateVoltage=300V

  • DC output voltage

    293 V

    ACPlateVoltage=300V

  • AC plate voltage per plate

    350 V

    CapacitorInputFilter

  • Plate-supply resistance per plate

    240 ohm

    ACPlateVoltage=350V

  • DC output voltage

    347 V

    ACPlateVoltage=350V

Characteristic

  • Tube voltage drop

    20 V

    At 150mA DC per plate

Data set 05

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater or filament voltage

    6.3 V

    Published nominal or stated operating value

  • Heater or filament current

    1 A

    Published nominal or stated operating value

Other

  • Maximum rectifier capacitor

    50 uF

    Capacitor-input filter

Data set 06

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • PEAK INVERSE PLATE VOLTAGE

    1000 V

  • With capacitor-input to filter

    350 V

  • PEAK PLATE CURRENT PER PLATE

    450 mA

  • DC OUTPUT CURRENT

    150 mA

  • Heater negative with respect to cathode

    500 V

  • Voltage (RMS)

    500 V

    Published table column 1 of 3

  • Voltage (RMS)

    600 V

    Published table column 2 of 3

  • Voltage (RMS)

    700 V

    Published table column 3 of 3

  • Filter—Input Capacitor

    50 µF

    Published table column 1 of 3

  • Filter—Input Capacitor

    50 µF

    Published table column 2 of 3

  • Filter—Input Capacitor

    50 µF

    Published table column 3 of 3

  • Impedance Per Plate

    150 Ω

    Published table column 1 of 3

  • Impedance Per Plate

    200 Ω

    Published table column 2 of 3

  • Impedance Per Plate

    240 Ω

    Published table column 3 of 3

  • ma. =

    150 V

    Published table column 1 of 4

  • ma. =

    245 V

    Published table column 2 of 4

  • ma. =

    293 V

    Published table column 3 of 4

  • ma. =

    347 V

    Published table column 4 of 4

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Peak Inverse Plate Voltage

    1000 V

    Published in approved 6CA4 target datasheet entry; Section1

  • Peak Plate Current (Per Plate)

    450 mA

    Published in approved 6CA4 target datasheet entry; Section1

  • to Filter

    350 V

    Published in approved 6CA4 target datasheet entry; Section1

  • Average Output Current

    150 mA

    Published in approved 6CA4 target datasheet entry; Section1

  • Peak Heater-Cathode Voltage

    500 V

    Published in approved 6CA4 target datasheet entry; Section1

  • per Plate 150 200

    240 Ω

    Published in approved 6CA4 target datasheet entry; Section1

  • For dc output current of

    150 mA

    Published in approved 6CA4 target datasheet entry; Section1

  • For dc output current of 150 mA 245 293

    347 V

    Published in approved 6CA4 target datasheet entry; Section1