Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
PentodeGridToPlateCapacitance
0.01 pF
Section1;Maximum
SECTION 2
Triode
Capacitance
TriodeGridToPlateCapacitance
1.7 pF
Section2
Voltage Radio Detector Converter ·Pentode-Triode
6EA8
Medium-mu triode and sharp-cutoff pentode used as a combined television oscillator and mixer around a 40 MHz intermediate frequency.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
Miniature medium-mu triode–sharp-cutoff pentode used as a combined oscillator and mixer in television receivers with an intermediate frequency around 40 MHz.
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
- 450 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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 80000 Ω
- Transconductance
- 0.0064 S
- Max plate voltage
- 330 V
- Max screen voltage
- 350 V
- Max plate dissipation
- 3.1 W
- Max screen dissipation
- 0.55 W
- Max cathode current
- 25 mA
- Rectifier max heater-cathode voltage
- 200 V
- Rectifier warm-up time
- 11 s
Pentode section; screen voltage governed by published screen-rating chart.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5000 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 40
- Max plate voltage
- 330 V
- Max plate dissipation
- 3 W
- Max cathode current
- 25 mA
- Rectifier max heater-cathode voltage
- 200 V
- Rectifier warm-up time
- 11 s
Triode 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.
Data set 02
1965 Westinghouse Data Book
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Pentode typical grid2 voltage
125 V
Grid2 input maximum
0.55 W
Characteristics
Pentode transconductance
6400 uS
Application
Application
Mixer / RF-IF amplifier
SECTION 2
Triode
Other
Triode typical plate voltage
125 V
Heater-cathode voltage maximum
200 V
Characteristics
Triode amplification factor
40
Triode transconductance
8500 uS
Application
Application
VHF oscillator
Data set 03
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
125 V
PentodeSection;Mixer
Screen voltage
125 V
PentodeSection;Mixer
Grid 1 voltage
-1 V
PentodeSection;Mixer
Plate current
12 mA
PentodeSection;Mixer
Screen current
4 mA
PentodeSection;Mixer
SECTION 2
Triode
Other
Plate voltage
150 V
TriodeSection;Oscillator
Plate current
18 mA
TriodeSection;Oscillator
Characteristic
Heater warm-up time
11 s
WholeTube
Data set 04
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Plate Voltage
125 V
PentodeSection
Screen Voltage
125 V
PentodeSection
Plate Current
12 mA
PentodeSection
SECTION 2
Triode
Characteristic
Plate Voltage
150 V
TriodeSection
Plate Current
18 mA
TriodeSection
Data set 05
1971 RCA HB3 Binder 4 of 7
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
125 V
Pentode;ClassA
Screen voltage
125 V
Pentode;ClassA
Grid voltage
-1 V
Pentode;ClassA
Plate current
12 mA
Pentode;ClassA
Screen current
4 mA
Pentode;ClassA
Maximum plate voltage
330 V
Pentode
Maximum screen supply voltage
330 V
Pentode
Plate dissipation
3.1 W
Pentode
Screen input
0.55 W
Pentode
Heater warm-up time
11 s
ControlledWarmup
Characteristic
Plate resistance
200000 ohm
Pentode
Transconductance
6400 uS
Pentode
SECTION 2
Triode
Other
Heater voltage
6.3 V
Heater current
450 mA
Plate voltage
150 V
Triode;ClassA
Plate current
18 mA
Triode;ClassA
Maximum plate voltage
330 V
Triode
Plate dissipation
2.5 W
Triode
Characteristic
Plate resistance
5000 ohm
Triode
Transconductance
8500 uS
Triode
Amplification factor
42
Triode
Capacitance
Grid-to-plate capacitance
1.7 pF
Triode
Data set 06
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Grid No.1 to Plate
0.02 pF
Section2
Grid No.1 to Cathode/Heater/Grid No.2/Grid No.3/Internal Shield
5 pF
Section2
Plate to Cathode/Heater/Grid No.2/Grid No.3
2.6 pF
Section2
Characteristic
Grid-No.2 Voltage
125 V
ClassA
Grid-No.1 Voltage
-1 V
ClassA
Plate Current
12 mA
ClassA
Grid-No.2 Current
4 mA
ClassA
SECTION 2
Triode
Capacitance
Grid to Plate
1.7 pF
Section1
Grid to Cathode/Heater/Pentode Cathode/Pentode Grid No.3/Internal Shield
3 pF
Section1
Plate to Cathode/Heater/Pentode Cathode/Pentode Grid No.3/Internal Shield
1.4 pF
Section1
Characteristic
Plate Supply Voltage
150 V
ClassA