Data set 01
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
MicrowaveTRSwitch
Other
Nominal thermal delay
50 s
At 20 °C
Specialized - Switching Tube ·MicrowaveTRSwitch
CV342
Miniature thermal-delay switch, VLS631/CV342, designed to apply anode voltage only after associated valve cathodes have reached operating temperature.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 500 mA
Description
Miniature thermal delay switch, designated VLS631 (CV342), for applying anode voltage after cathode warm-up.
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
- 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
MicrowaveTRSwitch
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Explicit alternate designation printed on VLS631 datasheet.
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
1947 Standard Valves
Published operating points and test conditions from this source.
SECTION 1
MicrowaveTRSwitch
Characteristics
Nominal delay
50 to 60 s
At 20 C
Other
Ambient temperature
-35 to 85 C
Maximum open-circuit contact voltage
220 VDC
Maximum contact current on make
1 A
Maximum surge current on make
5 A
Maximum current on break
100 mA
At 50 VDC