F820

Triggered ceramic-metal spark gap for electronic crowbar and energy-transfer applications. A trigger pulse initiates rapid high-current conduction to protect or discharge power systems.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

The ITT F820 is a triggered ceramic-metal spark gap for electronic crowbar and energy-transfer applications.

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

SparkGapPulseSwitch

X-ray radiationInterelectrode capacitances

Max cathode current: 100000 A

Triggered spark gap; electrical hold-off, trigger and discharge 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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

SparkGapPulseSwitch

Other

Operating range
10 to 24 kV
Static breakdown potential
30 kV
Trigger potential
15 kV
Energy discharge
2500 J
Peak current
100000 A
Delay time
0.05 us

Characteristic

Heater power required
No