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Specialized - Thyratron ·Thyratron

4049GD

Hot-cathode mercury-vapor thyratron, coded 4049GD and associated with type 3V/500A, designed for controlled high-voltage switching and rectifier applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
LARGE4
Base pins
4
Nominal heater
4 V / 11 A

Description

May 1958 3V/500A—1 © 1958 Standard Telephones and Cables Limited Ref.: 3V/500A Hot-Cathode Mercury- Vapour Thyratron Code: 4049GD

Socket description

Large American 4-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
LARGE4
Base pins
4
Nominal heater voltage
4 V
Nominal heater current
11 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

Thyratron

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
20000 V
Rectifier nominal output current
1.25 A
Rectifier peak forward current
5 A

Values transcribed from the approved datasheet; additional published data retained 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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Anode to grid

    2 pF

    Published direct interelectrode capacitance

  • Grid to cathode

    15 pF

    Published direct interelectrode capacitance

  • Heater/filament nominal current

    11 A

    Nominal published value