Data set 01
1948 Brimar Radio Valve Manual
Published operating points and test conditions from this source.
Pentode
Characteristic
Heater Voltage
6.3 V
Heater Current
300 mA
Voltage Pentode - Sharp Cutoff (single) ·Pentode
Sharp-cutoff high-transconductance pentode for fixed-gain RF and IF amplification in professional high-frequency equipment.
Sharp-cutoff RF pentode.
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
Absolute maximum values promoted; typical transconductance read as 4900 micromhos at 250 V plate / 150 V screen.
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.
Heater Voltage
6.3 V
Heater Current
300 mA
Data set 02
Published operating points and test conditions from this source.
HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
300 V
Maximum Screen Voltage
150 V
Maximum Plate Dissipation
3 W
Maximum Screen Dissipation
0.7 W
Transconductance
4900 µS
Typical
Plate Resistance
900000 ohm
Typical
Data set 03
Published operating points and test conditions from this source.
Maximum plate voltage
300 V
Published handbook rating
Maximum screen voltage
150 V
Published handbook rating
Plate voltage
250 V
ClassA OperatingPoint1
Screen voltage
150 V
ClassA OperatingPoint1
Control-grid bias
1 V
ClassA OperatingPoint1
Plate current
10.8 mA
ClassA OperatingPoint1
Screen current
4.1 mA
ClassA OperatingPoint1
Plate resistance
900000 ohm
ClassA OperatingPoint1
Transconductance
4900 µS
ClassA OperatingPoint1
Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating
Data set 04
Published operating points and test conditions from this source.
Plate Voltage
250 V
ClassA
Screen Voltage
150 V
ClassA
Grid Voltage
-1 V
ClassA
Plate Current
10.8 mA
ClassA
Screen Current
4.1 mA
ClassA