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Specialized - Thyratron ·Thyratron

KU25

Hydrogen three-element thyratron for pulse-network discharge service, capable of more than approximately 1.5 MW pulse output at high repetition rates.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
SUPERJUMBO4B
Base pins
4
Nominal heater
6.3 V / 10.6 A

Description

Hydrogen-filled three-element thyratron for pulse-network discharge service, capable of more than 1.5 MW pulse output and high repetition rates.

Socket description

Super Jumbo 4-contact base with bayonet

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SUPERJUMBO4B
Base pins
4
Nominal heater voltage
6.3 V
Nominal heater current
10.6 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
12000 V
Max cathode current
300 A
Rectifier nominal output current
200 mA
Rectifier peak forward current
130 A
Rectifier warm-up time
300 s

Applicable promoted fields mapped semantically from the printed ratings; device-specific electrical limits and operating conditions are preserved densely in TUBE_SECTION_PARAMETER.

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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

  • Heater Voltage

    5.9 to 6.7 V

  • Heater Current

    9.6 A to 11.6 A

Other

  • Minimum Heating Time

    5 min

  • Peak Forward Anode Voltage

    12000 V

  • Peak Inverse Anode Voltage

    12000 V

  • Peak Anode Current

    130 A

  • Average Anode Current

    200 mA

  • Peak Power Output

    736 kW

Data set 02

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristics

  • Minimum heating time

    5 min

Other

  • Peak forward anode voltage maximum

    12 kV

  • Peak inverse anode voltage maximum

    12 kV

  • Minimum anode supply voltage

    3.5 kV

  • Peak anode current maximum

    300 A

  • Average anode current maximum

    200 mA

  • RMS anode current maximum

    7.75 A

  • Anode current rate of rise maximum

    1250 A/us

  • Peak inverse trigger voltage maximum

    200 V

  • Anode delay time maximum

    0.65 us

  • Anode delay drift maximum

    0.1 us

  • Time jitter maximum

    0.005 us

  • Peak network voltage

    12 kV

    PulseModulator

  • Pulse repetition rate

    2500 pps

    PulseModulator

  • Pulse length

    0.4 us

    PulseModulator

  • PFN impedance

    48 Ohm

    PulseModulator

  • Trigger voltage

    200 V

    PulseModulator

  • Peak output power

    736 kW

    PulseModulator

  • Peak anode current

    130 A

    PulseModulator

  • Average anode current

    130 mA

    PulseModulator