Voltage Triode Pentode ·Pentode-Triode
6LB8
Combined triode-pentode for general amplification or receiving-equipment service.
- Sections
- 2
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 725 mA
Description
Pentode combined with a medium-mu triode for television and general electronic 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
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 725 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
B9A - 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
- Plate resistance
- 6000 Ω
- Transconductance
- 0.005 S
- Amplification factor
- 30
- Max plate voltage
- 330 V
- Max plate dissipation
- 2 W
Published source values promoted where applicable.
Section 2
Pentode
- Plate resistance
- 50000 Ω
- Transconductance
- 0.02 S
- Max plate voltage
- 330 V
- Max plate dissipation
- 4 W
- Max screen dissipation
- 1.1 W
Published source values promoted where applicable.
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.