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Specialized - Thyratron ·Thyratron

S155D

Mercury-vapor thyratron for heavy industrial power control. Its large directly heated cathode supports substantial low-drop discharge current.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5 V / 19 A

Description

Directly heated mercury-vapour triode thyratron for controlled high-voltage switching.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
5 V
Nominal heater current
19 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
Max plate voltage
15000 V
Max cathode current
2.5 A

Thyratron has no dedicated canonical SectionType; represented as Other.

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

1953 AEG

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Filament voltage

    5 V

  • Filament current

    19 A

  • Warm-up time minimum

    300 sec

  • Peak anode voltage maximum

    15 kV

  • Peak inverse voltage maximum

    15 kV

  • Peak anode current maximum

    10 A

  • Average anode current maximum

    2.5 A

Characteristic

  • Arc voltage drop

    15 V