Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
6.3 V
Heater current
300 mA
Plate voltage
150 V
ClassA
Plate current
10 mA
ClassA
Voltage - Dual Triode (similar) ·Triode-Triode
6AU7
Medium-mu twin triode with series/parallel heater operation, intended for general Class-A voltage amplification and related signal-processing applications.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 12.6 V / 300 mA
Description
6AU7 is described in the supplied Tung-Sol datasheet as a medium-mu twin triode with series/parallel heater. Published maximum ratings and core section characteristics were extracted into the technical tables.
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
- 300 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 600 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
- 6500 Ω
- Transconductance
- 0.0031 S
- Amplification factor
- 20
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 20 mA
Published section maximum ratings and core characteristics promoted; additional operating points retained as parameters.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 6500 Ω
- Transconductance
- 0.0031 S
- Amplification factor
- 20
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 20 mA
Physical triode restored under current one-row-per-physical-section policy.
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 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater voltage
6.3 V
Published table
Heater current
600 mA
Published table
Series heater voltage
12.6 V
Published table
Series heater current
300 mA
Published table
Plate resistance
6500 ohm
EachSection
Transconductance
3100 µS
EachSection
Amplification factor
20
EachSection
Alternate plate resistance
7700 ohm
EachSection
Alternate amplification factor
17
EachSection
Other
Plate voltage
200 V
EachSection
Plate current
11.8 mA
EachSection
Alternate plate voltage
250 V
EachSection