Power - Pentode (NOT beam) ·Pentode
Power/output pentode designed for low-frequency or audio-frequency output amplification.
Ruggedized power pentode for audio-frequency amplification, designed for mobile, aeronautical and industrial equipment exposed to shock and vibration.
Small-button Noval 9-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
Audio/power output pentode.
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
250 V
Screen Voltage
250 V
Plate Current
48 mA
Screen Current
5.5 mA
Transconductance
11300 uS
Plate Resistance
40000 ohm
Guaranteed Life
10000 h
Average of 100 tubes
Heater Cycling
2000 cycles
Minimum
Data set 02
Published operating points and test conditions from this source.
Heater or filament voltage
6.3 V
Published nominal value
Heater or filament current
760 mA
Published nominal value
Transconductance
11300 µS
Published nominal characteristic
Maximum plate dissipation
12 W
Published limit
Application
AF power amplifier
Published intended use
Minimum heater switching cycles
5000 cycles
Published ruggedized-service claim