Power - Pentode (NOT beam) ·Pentode
Audio power pentode with a 13 V heater, providing approximately 3.5 W output at a 250 V operating point.
13 V heater power pentode with a 250 V operating point and approximately 3.5 W published output.
British/European 7-pin
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 Brimar values promoted where applicable; additional data retained as parameters.
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
Plate Current
34 mA
Screen Voltage
250 V
Screen Current
6.5 mA
Control Grid Voltage
-16.5 V
Cathode Bias Resistor
410 ohm
Optimum Load
7000 ohm
Power Output
3.5 W
Plate Resistance
80000 ohm
Transconductance
2350 µS
Data set 02
Published operating points and test conditions from this source.
Application
Power output