Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Thyratron ·Thyratron

GL393A

Argon/mercury-vapor thyratron for regulated-rectifier circuits, providing stable control characteristics over a wide temperature range.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B4B
Base pins
4
Nominal heater
2.5 V / 7 A

Description

The GL-393-A is a thyratron for regulated-rectifier circuits using an argon and mercury-vapor gas mixture to provide stable characteristics over a wide temperature range.

Socket description

Medium 4-pin bayonet

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4B
Base pins
4
Nominal heater voltage
2.5 V
Nominal heater current
7 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 0

Thyratron

X-ray radiationInterelectrode capacitances
Max plate voltage
1250 V
Max cathode current
1.5 A
Rectifier peak inverse voltage
1250 V

Thyratron section; peak forward/inverse anode ratings and average anode current promoted.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 0

Thyratron

Other

  • Instantaneous Anode Current 25 Cycles and Above

    6 A

  • Surge Anode Current

    55 A

    DesignOnly

Characteristic

  • Peak Voltage Drop

    15 V

    Approximate