Power - Pentode (NOT beam) ·Pentode-Pentode
6HU8
Twin output pentode designed for stereo audio, push-pull output, and television oscillator/reactance service. Two pentode sections provide flexible dual-channel or paired output operation in one envelope.
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 550 mA
Description
Twin output pentode for stereo audio, push-pull output, and television oscillator/reactance service.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 550 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
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 6 W
- Max screen dissipation
- 1.25 W
- Max cathode current
- 40 mA
Representative section for repeated identical sections.
Section 2
Pentode
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 6 W
- Max screen dissipation
- 1.25 W
- Max cathode current
- 40 mA
Second identical physical output-pentode section; added to align physical rows with SectionCount.
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.