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72900T

Cold-cathode trigger tube for pulse and control circuits. Gas-discharge operation provides abrupt heaterless switching in response to a trigger signal.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

72900T is listed in the supplied Amperex material as a cold-cathode trigger tube. Published ratings and characteristics were captured from the supplied table.

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

No fixed ratings are recorded for this section.

Published ratings/characteristics reviewed.

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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

Anode voltage minimum
140 V DC
ColdCathodeTrigger
Anode voltage maximum
200 V DC
ColdCathodeTrigger
AC anode voltage
117 V AC
ColdCathodeTrigger
Starter-to-cathode breakdown voltage minimum
73 V
ColdCathodeTrigger
Starter-to-cathode breakdown voltage maximum
105 V
ColdCathodeTrigger
Anode-to-cathode breakdown voltage
>200 V
ColdCathodeTrigger

Other

Maximum load current
25 mA
ColdCathodeTrigger
Peak load current
100 mA
ColdCathodeTrigger