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Specialized - Thyratron ·Thyratron

5665

Very-high-current xenon thyratron for grid-controlled rectifier and pulse service. Its massive filament supports heavy industrial controlled-discharge operation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B7G
Base pins
3
Nominal heater
2.5 V / 31 A

Description

RCA C16J/5665 is a directly heated xenon negative-control thyratron with very high peak and average anode-current ratings for grid-controlled rectifier and pulse-power applications.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
3
Nominal heater voltage
2.5 V
Nominal heater current
31 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
330 V
Max cathode current
160 A

Published maximum ratings and device-specific characteristics are promoted where schema-compatible; remaining switching/gauge/regulator electrical data is retained in section 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

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

    31 A

    Nominal

  • Maximum deionization time

    1000 us

  • Maximum critical grid current

    10 uA

  • Maximum anode voltage drop at end of life

    14 V

  • Maximum commutation factor

    0.66 VA/us^2

  • Peak forward anode voltage

    1000 V

  • Peak inverse anode voltage

    1250 V

  • Peak negative grid voltage before conduction

    100 V

  • Peak anode/cathode current

    160 A

  • Average anode/cathode current

    16 A

  • Fault current

    1000 A

    Short-duration fault rating

  • Ambient or condensed-mercury operating temperature range

    -55 to +75 C

Characteristic

  • Minimum heating time prior to tube conduction

    60 s

  • Anode voltage drop at beginning of life

    11 V

  • Grid control ratio

    270

    Approximate; stated grid-resistor and DC conditions

Capacitance

  • Grid-to-anode capacitance

    8 pF

    Approximate

  • Grid-to-cathode capacitance

    29 pF

    Approximate