Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Triode (over 1000V 100W) ·Triode

8317

Very-high-power directly heated triode; available source material does not establish a narrower functional application confidently.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
14.5 V / 450 A

Description

Forced-air-cooled companion to 7560; otherwise shared electrical family data.

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
14.5 V
Nominal heater current
450 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

Triode

X-ray radiationInterelectrode capacitances
Amplification factor
45
Max plate voltage
20000 V
Max plate dissipation
60000 W
Max grid dissipation
2500 W

Applicable promoted ratings populated from printed headings; remaining published device-specific data 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

1971 Machlette Laboratories

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid-Plate Capacitance

    75 pF

  • Grid-Filament Capacitance

    200 pF

  • Plate-Filament Capacitance

    4 pF

Other

  • Filament Starting Current

    1200 A

  • Maximum DC Plate Current

    20 A