Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate Voltage
150 V
Characteristic
Plate Current
9 mA
Voltage - Dual Triode (similar) ·Triode-Triode
12AV7
Medium-mu twin triode with notably high transconductance and low plate resistance, providing substantially greater current capability than typical small-signal voltage-amplifier dual triodes.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 12.6 V / 225 mA
Description
High-transconductance twin triode adaptable to AF voltage-amplifier and oscillator/mixer applications.
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
- 12.6 V
- Nominal heater current
- 225 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 450 mA
- Series capable
- Yes
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
- 4800 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 41
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.7 W
Each identical triode section.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 4800 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 41
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.7 W
Second physical triode section; electrically identical twin 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
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
250 V
ClassA;EachSection
Plate current
18 mA
ClassA;EachSection
Grid voltage
-10 V
ClassA;EachSection
Characteristic
Plate resistance
4800 ohm
ClassA;EachSection
Transconductance
8500 uS
ClassA;EachSection
Amplification factor
41
ClassA;EachSection
Capacitance
Grid-to-plate capacitance
1.7 pF
EachSection
Input capacitance
1.8 pF
EachSection
Output capacitance
1.8 pF
EachSection
Data set 03
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Plate Voltage
150 V
EachSection
Amplification Factor
41
EachSection
Plate Resistance
4800 ohm
EachSection
Transconductance
8500 uS
EachSection