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Specialized - Thyratron ·Thyratron

7401

Lightweight subminiature cold-cathode self-indicating gas thyratron for relay and control applications with visible glow indication.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

The 7401 is a lightweight subminiature cold-cathode gas thyratron for relay/control applications with visible glow indication.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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 cathode current
8 mA

Cold-cathode thyratron; relay/switching ratings 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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • PositiveAnodeVoltageMaximum

    180 V

  • NegativeAnodeVoltageMaximum

    100 V

  • Anode Supply Voltage

    150 V

  • Anode Current

    7 mA

Characteristic

  • AnodeIonizationVoltage

    200 V

  • GridIonizationVoltage

    107 V

  • CurrentAmplification

    1400

Data set 02

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Positive Anode Voltage (Max.)

    1 VDC

    PublishedTable

  • Transfer Current~ (~ E B = 150 Vdc (Max.)

    150 VDC

    PublishedTable

Characteristic

  • Anode Circuit Resistance

    0 oHMs

    PublishedTable

  • Grid Trigger Signal

    5 voLTs

    PublishedTable

  • Grid Circuit Should Contain A 8,000 Ohm Series Resistance If The Source

    0 OHM

    PublishedTable