Data set 01
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
Thyratron
Other
Maximum peak inverse voltage
20000 V
Maximum peak anode current
20 A
Specialized - Thyratron ·Thyratron
3V531E
Directly heated hot-cathode mercury-vapor thyratron documented as an electrical replacement for obsolete 4078GA, intended for controlled high-voltage switching and rectifier service.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- SPECIAL3
- Base pins
- -
- Nominal heater
- 5 V / 20 A
Description
Directly heated hot-cathode mercury-vapour thyratron, stated to be equivalent to and to replace the obsolete 4078GA.
Socket description
Special 3-contact base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- SPECIAL3
- Base pins
- -
- Nominal heater voltage
- 5 V
- Nominal heater current
- 20 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
Thyratron
X-ray radiationInterelectrode capacitances
- Max cathode current
- 5 A
- Rectifier peak inverse voltage
- 20000 V
- Rectifier peak forward current
- 20 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.