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Rectifier - Half Wave ·Rectifier

301A

Western Electric single rectifier for power-supply service, providing substantial current and approximately 1.8 kV peak inverse-voltage capability with a low published forward drop.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
4
Nominal heater
5 V / 3 A

Description

Western Electric rectifier from the shared rectifier table.

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
4
Nominal heater voltage
5 V
Nominal heater current
3 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
Plate resistance
10000 Ω
Transconductance
0.0008 S
Amplification factor
8
Max plate voltage
135 V
Rectifier peak inverse voltage
1800 V
Rectifier nominal output current
525 mA
Rectifier peak forward current
1 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

193X Cunningham

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

  • Heater/filament voltage

    5 V

    Published nominal

  • Heater/filament current

    250 mA

    Published nominal

  • Transconductance

    800 uS

    Published characteristic

  • Amplification factor

    8

    Published characteristic

  • Plate resistance

    10000 Ohm

    Published characteristic

Data set 02

1956 Western Electric Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • HeaterOrFilamentVoltage

    5 V

  • HeaterOrFilamentCurrent

    2 A

Data set 03

2026 Western Electric 300s

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Filarnent voltage

    5 volt

    Filarnent voltage 5.0 volts

  • Nominal fi l a m e n t current

    3 amperes

    Nominal fi l a m e n t current 3.0 amperes

  • supply. The voltage should be maintained to within

    5 volt

    supply. The voltage should be maintained to within 5% of its rated value (5.0 volts). Operation

  • used, this time is

    30 seconds

    used, this time is 30 seconds. If the tube is operated at ambient temperatures below 20° C., a

  • Approximate anode-cathode potential drop

    10 volts

    Approximate anode-cathode potential drop 10 volts

  • ambient temperature range and plate current range, it may vary from

    5 volts

    ambient temperature range and plate current range, it may vary from 5 to 25 volts.

  • Table

    1 volt

    Table 1. The values listed are average values of the pulsating current and voltage for an

Other

  • Maximum peak plate current

    1 ampere

    Maximum peak plate current 1.0 ampere

  • Maximum peak potential between electrodes

    1800 volts

    Maximum peak potential between electrodes 1800 volts

  • The maximum permissible peak plate current (

    1 ampere

    The maximum permissible peak plate current (1.0 ampere) is a limitation on the instantaneous

  • The maximum permissible peak potential between electrodes (

    1800 volts

    The maximum permissible peak potential between electrodes (1800 volts) is a limitation on