Power - Pentode (NOT beam) ·Pentode
Battery output pentode designed for Class-A audio service. Its directly heated construction supports efficient low-frequency power amplification in portable receiving equipment.
Battery output pentode for Class A audio service.
International Octal
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 semantically from the approved source; repeated identical physical sections compressed 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
90 V
ClassA
Screen Voltage
90 V
ClassA
Plate Current
7.5 mA
ClassA
Power Output
240 mW
ClassA
Transconductance
1550 µS
Plate Resistance
115000 ohm
Data set 02
Published operating points and test conditions from this source.
HeaterOrFilamentVoltage
1.4 V
HeaterOrFilamentCurrent
100 mA
Plate Voltage
90 V
ClassA
Screen Voltage
90 V
ClassA
Control Grid Voltage
-7.5 V
ClassA
PlateCurrentZeroSignal
7.5 mA
ClassA
PlateCurrentMaximumSignal
7.8 mA
ClassA
ScreenCurrentZeroSignal
1.6 mA
ClassA
ScreenCurrentMaximumSignal
3.5 mA
ClassA
Load Resistance
8 kohm
ClassA