3068A

Single-ended water-cooled transmitting triode with an exceptionally heavy filament for very-high-power RF service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 30 V / 320 A

Description

3068A is a single ended water cooled triode described in the Standard Valves datasheet. The source provides construction, electrical constants, limiting conditions, and operating information.

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: 30 V
Nominal heater current: 320 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

Plate resistance: 900 Ω
Amplification factor: 36
Max plate voltage: 17500 V
Max plate dissipation: 160 W
Max grid dissipation: 3000 W
Max cathode current: 25 A

Extracted semantically from complete approved datasheet.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid-anode capacitance
145 pF
Anode-filament capacitance
38 pF
Grid-filament capacitance
110 pF

Other

Maximum frequency for full ratings
2 MHz
Maximum anode voltage at 22 MHz
15000 V
Frequency=22MHz