Data set 01
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum anode dissipation
10000 W
Maximum peak inverse voltage
45000 V
Rectifier - Half Wave ·Rectifier
4008B
Directly heated water-cooled half-wave rectifier for very-high-voltage supplies. Rated for approximately 45 kV peak inverse voltage, with water cooling permitting substantial continuous industrial rectifier operation.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 19 V / 59 A
Description
4008B is a half wave water cooled rectifier 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
- 19 V
- Nominal heater current
- 59 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
Rectifier
X-ray radiationInterelectrode capacitances
- Max plate dissipation
- 10000 W
- Rectifier peak inverse voltage
- 45000 V
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.