Data set 01
1959 Ediswan
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
General-purpose television twin triode
Voltage - Dual Triode (similar) ·Triode-Triode
6GA8
General-purpose medium-mu twin triode designed for television-receiver circuitry, providing two similar triode sections for amplifier and control functions.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
General-purpose twin triode for television receiver service.
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
- 6.3 V
- Nominal heater current
- 300 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
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0034 S
- Amplification factor
- 18
- Max plate voltage
- 250 V
Two identical triode sections; represented once under identical-section compression.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0034 S
- Amplification factor
- 18
- Max plate voltage
- 250 V
Second identical physical triode section; added to align rows with SectionCount.
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.