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Tube Tinker — Electron Tube Database
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Diode (NOT rectifier) ·Diode

BD22

High-current rare-gas-filled cold-cathode diode for pulsed capacitor-discharge switching and high-voltage ignition service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
9
Nominal heater
-

Description

High-current rare-gas-filled cold-cathode switching diode for pulsed capacitor-discharge switching and high-voltage ignition service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
9
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

Diode

X-ray radiationInterelectrode capacitances
Max cathode current
10 A

Cold-cathode switching/relay/display section; device-specific glow-discharge values preserved in parameter table.

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 Cerberus

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

  • BreakdownVoltage

    360 to 440 V

  • ArcVoltage

    15 V

    At 50 mA

Other

  • Peak Anode Current

    10 A

  • DischargeEnergy

    5 J

    Per discharge

  • DischargeFrequency

    2 Hz