Data set 01
1938 National Union
Published operating points and test conditions from this source.
SECTION 1
Tuning Indicator
Other
Target voltage
275 V
Twin indicator
Focus electrode voltage
190 V
Twin indicator
Tuning Indicator ·TuningIndicator-TuningIndicator
6355
National Union twin indicator tube providing two built-in visual indications for equipment test, status, or operating-condition display.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 140 mA
Description
National Union 6355 twin indicator tube intended to provide a built-in visual test indication in electronic equipment.
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
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 140 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
2 physical sections, each with unique specifications.
Section 1
Tuning Indicator
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Promoted ratings/characteristics read from the approved National Union datasheet.
Section 2
Tuning Indicator
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
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.