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Specialized - Thyratron ·Thyratron

C3JL

Long-envelope directly heated xenon negative-control thyratron with mid-tapped filament for high-voltage, high-current grid-controlled rectifier service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
4
Nominal heater
2.5 V / 9 A

Description

RCA C3JL is a directly heated xenon negative-control thyratron with a mid-tapped filament and high-voltage/high-current grid-controlled rectifier ratings.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
4
Nominal heater voltage
2.5 V
Nominal heater current
9 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
900 V
Max cathode current
30 A

Published ratings and characteristics promoted from approved datasheet.

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

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Filament voltage

    2.5 V

    Nominal

  • Filament current

    9 A

    Nominal

  • Maximum deionization time

    1000 us

  • Maximum critical grid current

    10 uA

  • Maximum commutation factor

    0.66 VA/us^2

  • Peak forward anode voltage

    900 V

  • Peak inverse anode voltage

    1250 V

  • Peak negative grid voltage before conduction

    100 V

  • Peak negative grid voltage during conduction

    10 V

  • Peak anode/cathode current

    30 A

  • Average anode/cathode current

    2.5 A

  • Fault current

    300 A

    Short-duration fault rating

  • Ambient or condensed-mercury operating temperature range

    -55 to +75 C

Characteristic

  • Minimum heating time prior to tube conduction

    30 s

  • Ionization time

    10 us

    Approximate

  • Anode voltage drop

    10 V

Capacitance

  • Grid-to-anode capacitance

    2 pF

    Approximate