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Rectifier - Half Wave ·Rectifier

321A

Directly heated mercury-vapor half-wave transmitting rectifier for high-voltage, high-current supplies, providing approximately 2 A nominal rectified output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
-
Nominal heater
5 V / 10 A

Description

Mercury-vapor half-wave high-current transmitting rectifier.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX4
Base pins
-
Nominal heater voltage
5 V
Nominal heater current
10 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
12500 V
Rectifier nominal output current
2 A
Rectifier peak forward current
8 A
Rectifier forward voltage drop
10 V

Promoted fields audited from printed ratings/characteristics; remaining published values preserved as parameters.

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

1956 Western Electric Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Filling

    Mercury vapor

Other

  • Maximum peak anode voltage

    12500 V

Data set 02

2026 Western Electric 300s

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Voltage

    5 Volt

    Voltage 5.0 volts similar socket and the 321A a W. E. 148A or similar

  • Nominal Current

    10 amperes

    Nominal Current 10.0 amperes socket. A special anode terminal connector is required.

  • Required Heating Time

    30 seconds

    Required Heating Time 30 seconds Mount in a vertical position only—base end down. A

  • Tube Voltage Drop—Approximate

    10 Volt

    Tube Voltage Drop—Approximate 10 volts C i r c u i t N u m b e r A t 7 . 5 k v. A t 1 2 . 5 k v. P h a s e r a t u r e

  • at

    10 kilovolts

    at 10 to 50° C. ambient temperature 7.5 kilovolts I 6 7000 11 5 0 0 6

  • should be maintained to within

    5 volt

    should be maintained to within 5% of the rated value. Operation of the filaments at a voltage

  • angle between the filament and anode voltage is approximately

    90 volt

    angle between the filament and anode voltage is approximately 90 electrical degrees. With this

  • Published value

    468 CENTIGRADE

    .468'^ DIA.OF 2 PINS CONDENSED MERCURY TEMPERATURE IN DEGREES CENTIGRADE

  • Voltage

    2.5 Volt

    Voltage 2.5 volts is required. Mount in vertical position only—base end

  • Nominal Current

    7.5 amperes

    Nominal Current 7.5 amperes down. A clearance of at least 2 inches should be

  • Required Heating Time

    15 seconds

    Required Heating Time 15 seconds allowed between the bulb and any adjacent object.

  • over-voltage

    50 volt

    over-voltage 50% At7.5kv. I n

  • over-voltage application

    8 volt

    over-voltage application 8=^=2 8=1=2 seconds

  • Tube Voltage Drop—^Approximate

    1515 Volt

    Tube Voltage Drop—^Approximate 1515 voltsvolts A 1 2300 0.64

  • Voltage

    2.5 Volt

    Voltage 2.5 volts of at least inches should be allowed between the

  • Nominal Current

    3 amperes

    Nominal Current 3.0 amperes bulb and any adjacent object.

  • Required Heating Time

    10 seconds

    Required Heating Time 10 seconds

  • over-voltage

    50 volt

    over-voltage 50% At 3500 volts I n

  • over-voltage application

    6 volt

    over-voltage application 6=«=2 seconds

  • Tube Voltage Drop—^Approximate

    15 Volt

    Tube Voltage Drop—^Approximate 15 volts A 1 1000 0.25

  • at

    15 kilovolts

    at 15 to 30° C. ambient temperature 20 kilovolts

  • at

    15 kilovolts

    at 15 to 40° C. ambient temperature 10 kilovolts

  • at

    30 kilovolts

    at 30 to 40° C. forced air temperature 20 kilovolts

  • Voltage

    5 Volt

    Voltage 5.0 volts Circuit Outputs: Load Current—

  • Nominal Current

    19 amperes

    Nominal Current 19.0 amperes Output Voltage DC Amps.

  • Required Heating Time

    120 seconds

    Required Heating Time 120 seconds I n - Quad

  • over-voltage

    50 volt

    over-voltage 50%

  • over-voltage application

    25 volt

    over-voltage application 25=^5 seconds B 2 3000 6000 4 8

  • Tube Voltage Drop—^Approximate

    10 Volt

    Tube Voltage Drop—^Approximate 10 volts 4 6000 8 16

  • Voltage

    5 Volt

    Voltage 5.0 volts of at least 4 inches should be allowed between the bulb

  • Nominal Current

    42 amperes

    Nominal Current 42.0 amperes and any adjacent object. Connections to the filament

  • Required Heating Time

    300 seconds

    Required Heating Time 300 seconds and anode terminals' should be flexible.

  • Tube Voltage Drop—^Approximate

    15 Volt

    Tube Voltage Drop—^Approximate 15 volts Desigma- o f Inverse Inverse Opera Opera

  • at

    15 kilovolts

    at 15 to 30° C. ambient temperature 20 kilovolts G 6 4000 8000 25 50

  • at

    15 kilovolts

    at 15 to 40° C. ambient temperature 10 kilovolts H 6 9000 18000 3 0

  • at

    30 kilovolts

    at 30 to 40° C. forced air temperature 20 kilovolts I 6 9000 18000 30

  • over-voltage application

    30 volt

    over-voltage application 30 O u t p u t Vo l t a g e DC Amps.

  • Tube Voltage Drop—Approximate

    15 Volt

    Tube Voltage Drop—Approximate 15 volts I n - Quad

  • at

    15 kilovolts

    at 15 to 30° C. ambient temperature 22 kilovolts G 6 4000 9000 25 50

  • at

    15 kilovolts

    at 15 to 40° C. ambient temperature 10 kilovolts H 6 9000 20000 —

  • at

    30 kilovolts

    at 30 to 40° C. forced air temperature 22 kilovolts I 6 9000 20000 30

  • Voltage

    6 Volt

    Voltage 6.0 volts nector is required. Mount in a vertical position only—

  • Nominal Current

    6.75 amperes

    Nominal Current 6.75 amperes base end down. A clearance of at least 2 inches should

  • Required Heating Time

    30 seconds

    Required Heating Time 30 seconds be allowed between the bulb and any adjacent object.

  • over-voltage

    50 volt

    over-voltage 50% O u t p u t Vo l t a g e DC Amps.

  • over-voltage application

    8 volt

    over-voltage application 8=^2 seconds Circuit Number At 7.5 k v. P h a s e r a t u r e

  • Tube Voltage Drop—Approximate

    10 Volt

    Tube Voltage Drop—Approximate 10 volts Designa of Inverse Opera Opera

  • over-voltage application

    15 volt

    over-voltage application 15=^=5 seconds I n - Quad

  • Tube Voltage Drop—Approximate

    10 Volt

    Tube Voltage Drop—Approximate 10 volts C i r c u i t N u m b e r A t 7 . 5 k v. A t 1 2 . 5 k v. P h a s e rature

  • at

    10 kilovolts

    at 10 to 50® C. ambient temperature 7.5 kilovolts I 6 7000 11 5 0 0 6

Other

  • Max. Time of Averaging Anode Current

    15 seconds

    Max. Time of Averaging Anode Current 15 seconds F 6 7000 11500 3

  • Maximum Peak Inverse Anode Voltage G

    6 Volt

    Maximum Peak Inverse Anode Voltage G 6 3000 5000 5 10

  • Maximum Instantaneous Anode Current

    2.5 amperes

    Maximum Instantaneous Anode Current 2.5 amperes B

  • Maximum Average Anode Current

    0.64 ampere

    Maximum Average Anode Current 0.64 ampere 4600 1.28

  • Max. Time of Averaging Anode Current

    5 seconds

    Max. Time of Averaging Anode Current 5 seconds E 3 3500 1.92

  • Maximum Peak Inverse Anode Voltage

    7.5 Volt

    Maximum Peak Inverse Anode Voltage 7.5 kilovolts F 6 7000 1.92

  • Maximum Instantaneous Anode Current

    1 ampere

    Maximum Instantaneous Anode Current 1.0 ampere B 2 1000

  • Maximum Average Anode Current

    0.25 ampere

    Maximum Average Anode Current 0.25 ampere C 4

  • Max. Time of Averaging Anode Current

    5 seconds

    Max. Time of Averaging Anode Current 5 seconds E 3 1500 0.75

  • Maximum Peak Inverse Anode Voltage

    3500 Volt

    Maximum Peak Inverse Anode Voltage 3500 volts F 6 3000 0.75

  • Max. Time of Averaging Anode Current

    30 seconds

    Max. Time of Averaging Anode Current 30 seconds I 6 9000 18000 12

  • Max. Time of Averaging Anode Current

    60 seconds

    Max. Time of Averaging Anode Current 60 seconds

  • Maximum Peak Inverse Anode Voltage F

    6 Volt

    Maximum Peak Inverse Anode Voltage F 6 9000 18000 15

  • Max. Time of Averaging Anode Current

    60 seconds

    Max. Time of Averaging Anode Current 60 seconds E 3 4500 10000 15 30

  • Maximum Peak Inverse Anode Voltage F

    6 Volt

    Maximum Peak Inverse Anode Voltage F 6 9000 20000 15 —

  • Max. Time of Averging Anode Current

    15 seconds

    Max. Time of Averging Anode Current 15 seconds G 6 3000 5 10

  • Maximum Peak Inverse Anode Voltage

    7.5 Volt

    Maximum Peak Inverse Anode Voltage 7.5 kilovolts H 6 7000 6

  • Max. Time of Averaging Anode Current

    15 seconds

    Max. Time of Averaging Anode Current 15 seconds F 6 7000 11 5 0 0 3