Data set 01
1950 General Electric Transmitting Types
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristics
Filling
Mercury vapor
Other
Maximum operating frequency
150 Hz
Rectifier - Half Wave ·Rectifier
8008
Mercury-vapor half-wave rectifier for transmitting and industrial power supplies. Rated for approximately 10 kV peak inverse voltage and 1.25 A average output with a low mercury-vapor arc drop.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 2P
- Socket code
- SJ4
- Base pins
- 4
- Nominal heater
- 5 V / 7.5 A
Description
The RCA 8008 is a mercury-vapor half-wave rectifier for transmitting and industrial power supplies, rated to 10 kV PIV and 1.25 A average current.
Socket description
Super-jumbo 4-contact bayonet
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 2P
- Socket code
- SJ4
- Base pins
- 4
- Nominal heater voltage
- 5 V
- Nominal heater current
- 7.5 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
2P - 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
- Rectifier peak inverse voltage
- 10000 V
- Rectifier nominal output current
- 1.25 A
- Rectifier forward voltage drop
- 15 V
Mercury-vapor rectifier maximum inverse-voltage and average-anode-current ratings promoted from the source.
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.
Data set 02
1956 RCA Transmitting Tubes
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum Peak Inverse Voltage
10000 V
Maximum Average Anode Current
1.25 A
Data set 03
1971 Machlette Laboratories
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum peak inverse anode voltage
10000 V
Maximum average anode current
1.25 A