Voltage Tetrode ·Tetrode
Directly heated dual-grid power-amplifier tube for low-power Class A output service. Its economical two-volt filament suits battery-operated receiving equipment.
Directly heated dual-grid power amplifier tube.
Small 5-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings and characteristics promoted where applicable.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Plate Voltage
135 V
ClassA;Grid2AndPlateTied
Grid Voltage
-20 V
ClassA
Plate Current
6 mA
ClassA
Load Resistance
11000 ohm
ClassA
Power Output
0.17 W
ClassA
Data set 02
Published operating points and test conditions from this source.
HeaterVoltageNominal
2 V
Nominal
HeaterCurrentNominal
120 mA
Nominal
Maximum Plate Voltage
180 V
Maximum Cathode Current
50 mA
Transconductance
1125 µS
Typical
Amplification Factor
4.7
Typical
Plate Resistance
4175 ohm
Typical
Data set 03
Published operating points and test conditions from this source.
Plate Voltage
135 V
ClassA;Grid2AndPlateTied
Grid Voltage
-20 V
ClassA
Plate Current
6 mA
ClassA
Load Resistance
11000 ohm
ClassA
Power Output
0.17 W
ClassA
Data set 04
Published operating points and test conditions from this source.
Power Output
3.5 W
ClassB;PushPull;TwoTubes