Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 2
Pentode
Other
PentodePlateDissipation
4 W
Section2
Voltage Triode Pentode ·Pentode-Triode
8JV8
High-mu triode and sharp-cutoff pentode for television sound-IF, sync, keyed-AGC, and video-amplifier circuits.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- NOVAL
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 8.5 V / 450 mA
Description
High-mu triode and sharp-cutoff pentode for television sound-IF, sync, keyed-AGC, and video-amplifier circuits.
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
- NOVAL
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 8.5 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
NOVAL - 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
- 17500 Ω
- Transconductance
- 0.004 S
- Amplification factor
- 70
- Max plate voltage
- 330 V
- Max plate dissipation
- 1.1 W
- Rectifier max heater-cathode voltage
- 200 V
- Rectifier warm-up time
- 11 s
Published promoted fields populated semantically; identical repeated sections compressed.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 150000 Ω
- Transconductance
- 0.0095 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 4 W
- Max screen dissipation
- 1.7 W
- Max cathode current
- 60 mA
- Rectifier max heater-cathode voltage
- 200 V
- Rectifier warm-up time
- 11 s
Published promoted fields populated semantically; identical repeated sections compressed.
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
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Plate Voltage
200 V
Grid 1 Voltage
-2 V
Plate Current
4 mA
SECTION 2
Pentode
Characteristics
Plate Voltage
200 V
Screen Voltage
200 V
Grid 1 Voltage
-2.9 V
Plate Current
22 mA
Screen Current
4 mA
Data set 03
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
°T
2 MA
Other
Heater Warm-up Time (Average)
11 s
Other;PublishedValue1
Heater Warm-up Time (Average)
11 s
Other;PublishedValue2
Peak value
200 V
Other;PublishedValue1
Peak value
200 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Plate Voltage
330 V
MaximumRating;PublishedValue1
Plate Voltage
330 V
MaximumRating;PublishedValue2
Grid-No
2 V
MaximumRating;PublishedValue1
Grid-No
330 V
MaximumRating;PublishedValue2
Positive-bias value
0 V
MaximumRating;PublishedValue1
Positive-bias value
0 V
MaximumRating;PublishedValue2
Negative-bias value
50 V
MaximumRating;PublishedValue1
Negative-bias value
50 V
MaximumRating;PublishedValue2
Plate Dissipation
1.1 W
MaximumRating;PublishedValue1
Plate Dissipation
4 W
MaximumRating;PublishedValue2
Grid-No
2 W
MaximumRating;PublishedValue1
Grid-No
1.7 W
MaximumRating;PublishedValue2
Plate Voltage
200 V
MaximumRating;PublishedValue1
Plate Voltage
60 V
MaximumRating;PublishedValue2
Plate Voltage
125 V
MaximumRating;PublishedValue3
Plate Voltage
200 V
MaximumRating;PublishedValue4
Grid-No
2 V
MaximumRating;PublishedValue1
Grid-No
200 V
MaximumRating;PublishedValue2
Grid-No
125 V
MaximumRating;PublishedValue3
Grid-No
200 V
MaximumRating;PublishedValue4
Grid-No.l Voltage
-2 V
MaximumRating;PublishedValue1
Grid-No.l Voltage
0 V
MaximumRating;PublishedValue2
Grid-No.l Voltage
-2.9 V
MaximumRating;PublishedValue3
Plate Resistance (Approx.)
0.0175 megohm
MaximumRating;PublishedValue1
Plate Resistance (Approx.)
0.1 megohm
MaximumRating;PublishedValue2
Plate Resistance (Approx.)
0.15 megohm
MaximumRating;PublishedValue3
Plate Current
4 mA
MaximumRating;PublishedValue1
Plate Current
51 mA
MaximumRating;PublishedValue2
Plate Current
22 mA
MaximumRating;PublishedValue3
Plate Current
22 mA
MaximumRating;PublishedValue4
Grid-No
2 mA
MaximumRating;PublishedValue1
Grid-No
14 mA
MaximumRating;PublishedValue2
Grid-No
4 mA
MaximumRating;PublishedValue3
Grid-No
4 mA
MaximumRating;PublishedValue4
current of
20 V
MaximumRating;PublishedValue1
current of
-5 V
MaximumRating;PublishedValue2
current of
-5.5 V
MaximumRating;PublishedValue3
current of
-9 V
MaximumRating;PublishedValue4
For fixed-bias operation
0.5 megohm
MaximumCircuitValue;PublishedValue1
For fixed-bias operation
0.25 megohm
MaximumCircuitValue;PublishedValue2
For cathode-bias operation
1 megohm
MaximumCircuitValue;PublishedValue1
For cathode-bias operation
1 megohm
MaximumCircuitValue;PublishedValue2
Maximum Plate Voltage
330 V
Section1
Maximum Plate Dissipation
1.1 W
Section1
Capacitance
Grid to Plate
2.2 pF
Capacitance
Grid to Cathode and Heater
3 pF
Capacitance
Plate to Cathode and Heater
2 pF
Capacitance
Grid No.l to Plate
0.08 pF
Capacitance
Internal Shield
8 pF
Capacitance
Internal Shield
3.2 pF
Capacitance
Pentode Grid No.l to Triode Plate
0.012 pF
Capacitance
Pentode Plate to Triode Plate
0.24 pF
Capacitance
Characteristic
Plate Resistance
17500 ohm
Section1
Transconductance
4000 uS
Section1
Amplification Factor
70
Section1
SECTION 2
Pentode
Other
Maximum Plate Voltage
330 V
Section2
Maximum Plate Dissipation
4 W
Section2
Maximum Cathode Current
60 mA
Section2
Characteristic
Plate Resistance
100000 ohm
Section2
Transconductance
11500 uS
Section2