Voltage Pentode or Tetrode (under 100V) ·Pentode
Extremely low-drain directly heated subminiature pentode for audio-frequency and direct-coupled amplification from very low battery supplies.
Directly heated subminiature pentode for resistance-coupled audio-frequency and direct-coupled amplifiers.
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 values are typical summary-table operating/characteristic data, not maximum ratings.
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.
HeaterVoltageNominal
0.625 V
Nominal
HeaterCurrentNominal
15 mA
Nominal
Maximum Plate Voltage
25 V
Maximum Screen Voltage
25 V
Maximum Cathode Current
0.1 mA
Transconductance
36 µS
Typical
Plate Resistance
5000000 ohm
Typical
Data set 02
Published operating points and test conditions from this source.
Plate Voltage
22.5 V
Typical operating point; Voltage Amp.
Grid 1 Voltage
-0.625 V
Typical operating point; Voltage Amp.
Grid 2 Voltage
22.5 V
Typical operating point; Voltage Amp.
Plate Current
0.125 mA
Typical operating point; Voltage Amp.
Grid 2 Current
0.04 mA
Typical operating point; Voltage Amp.
Output Power
37 mW
Typical operating point; Voltage Amp.
Maximum Length
1.25 in
Maximum dimension
Maximum Width
0.385 in
Maximum dimension
Maximum Thickness
0.285 in
Maximum dimension