12HU8

Twin output pentode, the 12-volt-heater designation of the 6HU8/12HU8 family. Two power-capable pentode sections are combined in one envelope for dual output-stage applications.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 12 V / 300 mA

Description

12-volt-heater designation of the twin output pentode on the 6HU8/12HU8 sheet.

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: 12 V
Nominal heater current: 300 mA
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

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 12 W
Max screen dissipation: 1.25 W
Max cathode current: 40 mA

Representative section for repeated identical sections.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 12 W
Max screen dissipation: 1.25 W
Max cathode current: 40 mA

Identical second physical section; duplicated from representative section per physical-section-row policy.

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.

No source-specific operating conditions are recorded.