Data set 01
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum direct anode voltage
17500 V
Maximum anode dissipation
20000 W
Maximum grid dissipation
300 W
Power - Triode (over 1000V 100W) ·Triode
4009B
Single-ended water-cooled triode documented by Standard Valves with published construction, electrical constants, limiting conditions, and operating information for high-power service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 20 V / 61 A
Description
4009B is a single ended water cooled triode described in the Standard Valves datasheet. The source provides construction, electrical constants, limiting conditions, and operating information.
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
- 20 V
- Nominal heater current
- 61 A
- 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
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 6000 Ω
- Transconductance
- 0.0067 S
- Amplification factor
- 40
- Max plate voltage
- 17500 V
- Max plate dissipation
- 20000 W
- Max grid dissipation
- 300 W
- Max cathode current
- 2.5 A
Published ratings and characteristics promoted where applicable; additional published data retained as parameters.
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.