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Tube Tinker — Electron Tube Database
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Rectifier - Half Wave ·Rectifier

KU93

Rugged ceramic hydrogen-filled diode for high-voltage rectifier and pulse-clipper circuits. Its gas-assisted conduction provides ampere-class output and exceptionally high pulse current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5 V / -

Description

Rugged ceramic hydrogen diode for high-voltage rectifier and clipper circuits.

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
-
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

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
30000 V
Rectifier nominal output current
2 A
Rectifier peak forward current
500 A
Rectifier forward voltage drop
70 V

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

Rectifier

Characteristic

  • Heater Voltage

    5 V

  • Heater Current

    15-27 A

  • Anode Voltage Drop

    70 V

  • Minimum Heating Time

    300 s

Other

  • Maximum Peak Inverse Anode Voltage

    30000 V

  • Maximum Peak Anode Current

    500 A

  • Maximum Average Anode Current

    2 A

  • Maximum RMS Anode Current

    15 A

Environmental

  • Ambient Temperature Range

    -55 to +125 C