Power - Pentode (NOT beam) ·Pentode-Triode
6BM8EH
Modern triode/power-pentode combination for low-frequency voltage amplification and audio power output.
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 850 mA
Description
Miniature triode-pentode for low-frequency voltage amplification and audio power-output 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
- 850 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
Triode
- Transconductance
- 0.0022 S
- Amplification factor
- 70
- Max plate voltage
- 300 V
- Max plate dissipation
- 1.5 W
Triode section.
Section 2
Pentode
- Transconductance
- 0.0075 S
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 7 W
- Max screen dissipation
- 1.8 W
Pentode power-output section.
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.