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Tube Tinker — Electron Tube Database
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Power - Triode (over 1000V 100W) ·Triode

9C21

No short description is recorded for this tube.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
9.5 V / 415 A

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
9.5 V
Nominal heater current
415 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 0

Triode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Transmitting triode; 9.5 V 415 A filament, mu 36; Class B maximum plate dissipation 40 kW.

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

9999 Mixed D 1000

Published operating points and test conditions from this source.

SECTION 0

Triode

Other

  • Heater/filament voltage

    9.5 V

    Filament voltage

  • Heater/filament current

    415 A

    Filament current

  • Maximum plate voltage

    15000 V

    Class B AF maximum plate voltage