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

Specialized - Thyratron ·Thyratron

C6JA

Gas-filled high-current thyratron triode designed for applications requiring precise control of substantial power conduction.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
4BZ
Socket code
-
Base pins
4
Nominal heater
2.5 V / 21 A

Description

Gas-filled high-current thyratron triode for applications requiring precise control.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
4BZ
Socket code
-
Base pins
4
Nominal heater voltage
2.5 V
Nominal heater current
21 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4BZ - 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
1000 V
Max cathode current
77 A
Rectifier peak inverse voltage
1250 V
Rectifier nominal output current
6.4 A
Rectifier peak forward current
100 A
Rectifier forward voltage drop
14 V
Rectifier warm-up time
60 s

Xenon thyratron; applicable rectifier-like conduction ratings promoted from the published specification.

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

1955 Vacuum Tube Products

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

  • Heater Current

    17 A to 23 A

  • Operating Temperature

    -55 to 75 C

  • Tube Voltage Drop

    14 V

    Anode current=6.4A

  • Peak Emission Voltage Drop

    45 V

    Anode current=100A

  • Critical Grid Voltage

    -7.5 to -3 V

    Anode=1000V

  • Critical Anode Voltage

    75 V

    Grid=+3V; conduction below this value

Other

  • Rated Anode Current Continuous

    6.4 A

  • Rated Anode Current Average

    6.4 A

  • Rated Anode Current 15-Second

    12.8 A

    15s on / 15s off

  • Peak Anode Current

    100 A

    Continuously oscillographically recorded

  • Peak Forward Voltage

    1000 V

  • Peak Inverse Voltage

    1250 V

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Heater or filament voltage

    2.5 V

    Section1

  • Heater or filament current

    21 A

    Section1

  • Peak forward voltage maximum

    1000 V

    Thyratron

  • Peak inverse voltage maximum

    1250 V

    Thyratron

  • Peak anode current maximum

    77 A

    Thyratron

  • Average anode current maximum

    6.4 A

    Thyratron

  • Maximum grid voltage

    -100 V

    Thyratron

Characteristic

  • Filament heating time

    60 s

    Thyratron

  • Tube voltage drop

    9 V

    Thyratron

  • Deionization time

    1000 µs

    Thyratron

Data set 03

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

    21 A

    Nominal

  • Maximum deionization time

    1000 us

  • Maximum critical grid current

    10 uA

  • Maximum anode voltage drop at end of life

    12 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

    77 A

  • Average anode/cathode current

    6.4 A

  • Fault current

    770 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

    9 V

  • Grid control ratio

    210

    Approximate; stated grid-resistor and DC conditions

Capacitance

  • Grid-to-anode capacitance

    4 pF

    Approximate

  • Grid-to-cathode capacitance

    21 pF

    Approximate