Specialized - Switching Tube ·ThermalDelaySwitch
S1021G
Miniature thermal-delay switch. Heater warm-up actuates sealed contacts after a controlled time interval for sequencing and protection.
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- -
- Nominal heater
- 6.3 V / 500 mA
Description
Thermal delay switch for delaying application of anode voltage until indirectly heated valves or mercury-vapour rectifiers have warmed.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7G
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 500 mA
- 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
ThermalDelaySwitch
No fixed ratings are recorded for this section.
Special-valve ratings and characteristics retained as parameters where applicable.
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.