Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Gauge
Other
Grid voltage
250 V
Grid current
10 mA
Collector voltage
-30 V
Characteristics
Minimum measurable pressure
1e-8 torr
Specialized - Gauge Tube ·Gauge
JA10
Compact ionization vacuum gauge designed for stable low-pressure measurement and easy collector degassing, with measurable pressure extending to approximately 10^-8 torr.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 3.8 V / 3.2 A
Description
Compact ionization gauge for low-pressure measurement, designed for improved stability and easy collector degassing.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 3.8 V
- Nominal heater current
- 3.2 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
Gauge
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed 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.
Data set 02
1968 Mazda Belvu
Published operating points and test conditions from this source.
SECTION 1
Gauge
Characteristics
Heater or filament voltage
3.8 V
Published nominal or stated operating value
Heater or filament current
1.4 A
Published nominal or stated operating value
Pressure measurement range
0.000001 to 0.0001 Torr
Published
Other
Measurement grid voltage
250 V
Published