Voltage - Triode (single) ·Triode
Indirectly heated general-purpose triode for detector and audio-frequency amplifier service.
Indirectly heated general-purpose triode for detector and audio-frequency amplifier service.
European 8-pin side-contact base
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
General-purpose triode; promoted values from nominal and apparatus-builder data.
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.
Typical plate voltage
250 V
Typical plate current
6 mA
Control-grid bias
-5.5 V
Transconductance
2500 µS
Amplification factor
30
Plate resistance
12000 ohm
Grid-anode capacitance
1.7 pF
Data set 02
Published operating points and test conditions from this source.
HeaterOrFilamentVoltage
4 V
HeaterOrFilamentCurrent
1 A
Data set 03
Published operating points and test conditions from this source.
Typical plate voltage
250 V
Typical plate current
6 mA
Typical grid voltage
-5.5 V
Maximum no-current anode voltage
550 V
Maximum heater-cathode voltage
50 V
Data set 04
Published operating points and test conditions from this source.
Grid-anode capacitance
1.7 pF
Anode-cathode capacitance
4.5 pF
Grid-cathode capacitance
4.9 pF
Plate current
6 mA
Maximum cathode current
10 mA
Maximum heater-cathode voltage
50 V