Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 2
Pentode
Other
PlateVoltageTypical
330 V
Published operating/characteristic value
PlateCurrentTypical
12 mA
Published operating/characteristic value
Voltage Triode Pentode ·Pentode-Triode
6GJ8
Sharp-cutoff pentode and medium-mu triode combination, with the pentode intended primarily as a television horizontal-deflection oscillator.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 600 mA
Description
Sharp-cutoff pentode and medium-mu triode; pentode intended primarily as a television horizontal-deflection oscillator.
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
- 600 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
- Plate resistance
- 5000 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 40
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.5 W
Published section data extracted from approved source.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 150000 Ω
- Transconductance
- 0.0075 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 2.5 W
- Max screen dissipation
- 0.55 W
Published section data extracted from approved source.
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
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
6.3 V
Heater current
600 mA
Plate voltage
125126 V
Typical operating conditions
Plate current
13.512 mA
Typical operating conditions
SECTION 2
Pentode
Other
Heater voltage
6.3 V
Heater current
600 mA
Plate voltage
125126 V
Typical operating conditions
Plate current
13.512 mA
Typical operating conditions
Data set 03
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Grid-to-plate capacitance
2.6 pF
WithoutShield
Input capacitance
3.4 pF
WithoutShield
Output capacitance
1.6 pF
WithoutShield
Other
Plate voltage
125 V
ClassA
Grid #1 voltage
-1 V
ClassA
Plate current
13.5 mA
ClassA
Heater warm-up time
11 s
BothSections
SECTION 2
Pentode
Capacitance
Grid #1-to-plate capacitance
0.036 pF
WithoutShield
Input capacitance
8 pF
WithoutShield
Output capacitance
2.4 pF
WithoutShield
Other
Plate voltage
125 V
ClassA
Screen voltage
125 V
ClassA
Grid #1 voltage
-2 V
ClassA
Plate current
12 mA
ClassA
Screen current
4.5 mA
ClassA
Peak negative grid #1 voltage
175 V
HorizontalDeflectionOscillator
Peak cathode current
330 mA
HorizontalDeflectionOscillator