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F695

Four-electrode mercury-vapor thyratron designed for high-impedance, low-grid-power control sources. Its heavy heater supports substantial controlled current.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 4.5 A

Description

Four-electrode mercury-vapor thyratron designed for high-impedance, low-grid-power control sources.

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: 5 V
Nominal heater current: 4.5 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 cathode current: 2.5 A

Promoted only where the locked section schema has a direct semantic match; device-specific thyratron, magnetron, transmitting-tube, ignitron, and broadband data are retained 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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Heater or filament voltage
5 V
Section1
Heater or filament current
4.5 A
Section1
Peak forward voltage maximum
1000 V
Thyratron
Peak inverse voltage maximum
1000 V
Thyratron
Peak anode current maximum
15 A
Thyratron
Average anode current maximum
2.5 A
Thyratron
Maximum grid voltage
-1000 V
Thyratron

Characteristic

Filament heating time
300 s
Thyratron
Tube voltage drop
16 V
Thyratron
Ionization time
10 µs
Thyratron
Deionization time
1000 µs
Thyratron