Voltage Pentode or Tetrode (with diode) ·Diode-Diode-Pentode
6KU8
Diode-pentode intended for television IF and video-detector service, combining a high-frequency pentode amplifier with a diode for picture-signal rectification.
- Sections
- 3
- Base
- B9A
- Socket code
- -
- Base pins
- 9
- Nominal heater
- 6.3 V / 725 mA
Description
Sharp-cutoff pentode combined with two diode sections in a miniature envelope.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- B9A
- Socket code
- -
- 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
3 physical sections, each with unique specifications.
Section 1
Diode
No fixed ratings are recorded for this section.
Published source values promoted where applicable.
Section 2
Diode
No fixed ratings are recorded for this section.
Published source values promoted where applicable.
Section 3
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.