Data set 01
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
Thyratron
Other
Heater/filament nominal current
5.5 A
Nominal published value
Specialized - Thyratron ·Thyratron
3V420B
Indirectly heated mercury-vapor thyratron for controlled switching and rectifier service, using grid triggering to initiate the conductive gas-discharge state.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater
- 5 V / 5.5 A
Description
Indirectly heated mercury-vapor thyratron.
Socket description
European 5-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater voltage
- 5 V
- Nominal heater current
- 5.5 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
- Rectifier peak inverse voltage
- 1.5 V
- Rectifier nominal output current
- 2.5 A
- Rectifier peak forward current
- 12.5 A
Values transcribed from the approved datasheet; 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.