Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Service
VHF oscillator and mixer
Voltage Radio Detector Converter ·Pentode-Triode
9KZ8
Medium-mu triode and sharp-cutoff pentode for combined VHF television oscillator and mixer service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 9 V / 300 mA
Description
Medium-mu triode and sharp-cutoff pentode for combined VHF television oscillator and mixer 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
- 9 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
- Plate resistance
- 5400 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 46
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.5 W
Published source values promoted where applicable.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 200000 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 source values promoted where applicable.
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
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater Warm-up Time (Average)
11 s
Other;PublishedValue1
Heater Warm-up Time (Average)
11 s
Other;PublishedValue2
Heater Warm-up Time (Average)
11 s
Other;PublishedValue3
Peak value
200 V
Other;PublishedValue1
Peak value
200 V
Other;PublishedValue2
Peak value
200 V
Other;PublishedValue3
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue3
Grid to Plate
1.6 pF
Other
Grid to Ti'iode Cathode, Pentode Cathode, Heater, Pentode Grid
3 pF
Other;PublishedValue1
Grid to Ti'iode Cathode, Pentode Cathode, Heater, Pentode Grid
3.2 pF
Other;PublishedValue2
Plate to Triode Cathode, Pentode Cathode, Heater, Pentode Grid
3 pF
Other;PublishedValue1
Plate to Triode Cathode, Pentode Cathode, Heater, Pentode Grid
1.8 pF
Other;PublishedValue2
Grid No.l to Plate
0.01 pF
Other
Internal Shield
5.5 pF
Other
Internal Shield
3.4 pF
Other
Heater to Cathode (Each Unit)
3.2 pF
Other
Plate Voltage
330 V
MaximumRating;PublishedValue1
Plate Voltage
330 V
MaximumRating;PublishedValue2
Grid-No
2 V
MaximumRating;PublishedValue1
Grid-No
330 V
MaximumRating;PublishedValue2
Grid No.l (Control-Grid) Voltage, Positive-bias value
0 V
MaximumRating;PublishedValue1
Grid No.l (Control-Grid) Voltage, Positive-bias value
0 V
MaximumRating;PublishedValue2
Plate Dissipation
2.5 W
MaximumRating;PublishedValue1
Plate Dissipation
2.5 W
MaximumRating;PublishedValue2
For grid-No
2 V
MaximumRating;PublishedValue1
For grid-No
165 V
MaximumRating;PublishedValue2
For grid-No
0.55 V
MaximumRating;PublishedValue3
For grid-No
2 V
MaximumRating;PublishedValue1
For grid-No
165 V
MaximumRating;PublishedValue2
For grid-No
330 V
MaximumRating;PublishedValue3
For grid-No
300 V
MaximumRating;PublishedValue4
Maximum Plate Voltage
330 V
Section1
Maximum Plate Dissipation
2.5 W
Section1
Characteristic
Plate Voltage
125 V
Characteristic;PublishedValue1
Plate Voltage
125 V
Characteristic;PublishedValue2
Grid-No
1 V
Characteristic;PublishedValue1
Grid-No
-1 V
Characteristic;PublishedValue2
Plate Resistance (Approx.)
5400 ohm
Characteristic;PublishedValue1
Plate Resistance (Approx.)
200000 ohm
Characteristic;PublishedValue2
Plate Current
13.5 mA
Characteristic;PublishedValue1
Plate Current
12 mA
Characteristic;PublishedValue2
Grid-No
2 mA
Characteristic;PublishedValue1
Grid-No
4 mA
Characteristic;PublishedValue2
Grid-No.l Voltage (Approx.) for plate current of
10 V
Characteristic;PublishedValue1
Grid-No.l Voltage (Approx.) for plate current of
-8 V
Characteristic;PublishedValue2
Grid-No.l Voltage (Approx.) for plate current of
-8 V
Characteristic;PublishedValue3
Plate Resistance
5400 ohm
Section1
Transconductance
8500 uS
Section1
Amplification Factor
46
Section1
SECTION 2
Pentode
Other
Maximum Plate Voltage
330 V
Section2
Maximum Screen Voltage
330 V
Section2
Maximum Plate Dissipation
2.5 W
Section2
Characteristic
Plate Resistance
200000 ohm
Section2
Transconductance
7500 uS
Section2