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Specialized - Thyratron ·Thyratron

5545

Grid-controlled gas thyratron documented by Amperex for controlled switching and power-conduction service, with published ratings and operating characteristics for industrial circuitry.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B9A
Base pins
-
Nominal heater
2.5 V / 21 A

Description

5545 is listed in the supplied Amperex material as a grid-controlled gas thyratron. Published ratings and operating characteristics were captured from the supplied table.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
-
Nominal heater voltage
2.5 V
Nominal heater current
21 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

No fixed ratings are recorded for this section.

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 control grid

    0.8 pF

    Published direct interelectrode capacitance

  • Control grid to cathode

    45 pF

    Published direct interelectrode capacitance

  • Heater/filament nominal current

    21 A

    Nominal published value

Data set 02

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

  • Filament heating time

    60 s

  • Tube drop

    16 V

    Conducting

  • Deionization time

    500 us

Other

  • Peak forward anode voltage

    1500 V

  • Peak inverse anode voltage

    1500 V

  • Peak anode current

    80 A

  • Average anode current

    6.1 A

  • Maximum grid voltage

    -250 V

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

  • Filament voltage

    2.5 V

    ThyratronService

  • Filament current

    21 A

    ThyratronService

  • Filament heating time

    60 s

    ThyratronService

  • Tube voltage drop

    16 V

    ThyratronService

Other

  • Maximum peak forward voltage

    1500 V

    ThyratronService

  • Maximum peak inverse voltage

    1500 V

    ThyratronService

  • Maximum peak anode current

    80 A

    ThyratronService

  • Maximum average anode current

    6.4 A

    ThyratronService

  • Maximum grid voltage

    -250 V

    ThyratronService