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Power - Pentode Single (NOT beam) (under 10W) ·Pentode

1G5G

Directly heated power pentode for battery receiver output, providing approximately 0.3 W Class-A loudspeaker power.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 6X-O-O
Socket code: IO
Base pins: 7
Nominal heater: 2 V / 120 mA

Description

Directly heated power-amplifier pentode for Class A service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6X-O-O
Socket code: IO
Base pins: 7
Nominal heater voltage: 2 V
Nominal heater current: 120 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6X-O-O - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 160000 Ω
Transconductance: 0.00155 S
Amplification factor: 200
Max plate voltage: 135 V
Max screen voltage: 135 V
Max plate dissipation: 1.25 W
Max screen dissipation: 0.6 W

Promoted characteristics use first listed Class A1 condition (90 V).

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Maximum Plate Voltage
90 V
Published ratings
Maximum Screen Voltage
90 V
Published ratings
Plate Voltage
90 V
ClassA
Screen Voltage
90 V
ClassA
Amplification Factor
200
ClassA
Plate Resistance
0.133 Mohm
ClassA
Transconductance
1500 uS
ClassA
Plate Current
8.5
ClassA
Screen Current
2.7
ClassA
Load Resistance
8000
ClassA
Power Output
0.3
ClassA

Data set 02

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate Voltage
90 V
ClassA
Screen Voltage
90 V
ClassA
Power Output
0.3 W
ClassA

Characteristic

Plate Current
8.5 mA

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Maximum plate voltage
135 V
Maximum screen-grid voltage
135 V
Plate voltage
135 V
ClassA
Screen-grid voltage
135 V
ClassA
Control-grid voltage
-13.5 V
ClassA
Plate current
8.7 mA
ClassA
Screen-grid current
2.5 mA
ClassA
Plate resistance
160000 Ohm
ClassA
Transconductance
1550 uS
ClassA
Load resistance
9000 Ohm
ClassA
Power output
0.55 W
ClassA
Plate voltage
90 V
ClassA 90V
Screen-grid voltage
90 V
ClassA 90V
Control-grid voltage
-6 V
ClassA 90V
Plate current
8.5 mA
ClassA 90V
Screen-grid current
2.5 mA
ClassA 90V
Plate resistance
133000 Ohm
ClassA 90V
Transconductance
1500 uS
ClassA 90V
Load resistance
8500 Ohm
ClassA 90V
Power output
0.25 W
ClassA 90V

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Filament Voltage
2 V
Nominal
Filament Current
120 mA
Nominal
Plate Voltage
90 V
ClassA1;PlateVoltage=90V
Screen Voltage
90 V
ClassA1;PlateVoltage=90V
Control Grid Voltage
-6 V
ClassA1;PlateVoltage=90V
PeakAFSignalVoltage
6 V
ClassA1;PlateVoltage=90V
Zero Signal Plate Current
8.5 mA
ClassA1;PlateVoltage=90V
Zero Signal Screen Current
2.5 mA
ClassA1;PlateVoltage=90V
Maximum Signal Plate Current
8.7 mA
ClassA1;PlateVoltage=90V
Maximum Signal Screen Current
3 mA
ClassA1;PlateVoltage=90V
Load Resistance
8500 ohm
ClassA1;PlateVoltage=90V
Total Harmonic Distortion
6 %
ClassA1;PlateVoltage=90V
Second Harmonic Distortion
3 %
ClassA1;PlateVoltage=90V
Third Harmonic Distortion
5 %
ClassA1;PlateVoltage=90V
Power Output
0.25 W
ClassA1;PlateVoltage=90V
Plate Voltage
124 V
ClassA1;PlateVoltage=124V
Screen Voltage
124 V
ClassA1;PlateVoltage=124V
Control Grid Voltage
-11 V
ClassA1;PlateVoltage=124V
PeakAFSignalVoltage
9.9 V
ClassA1;PlateVoltage=124V
Zero Signal Plate Current
10 mA
ClassA1;PlateVoltage=124V
Zero Signal Screen Current
3 mA
ClassA1;PlateVoltage=124V
Maximum Signal Plate Current
10.7 mA
ClassA1;PlateVoltage=124V
Maximum Signal Screen Current
4.3 mA
ClassA1;PlateVoltage=124V
Load Resistance
8000 ohm
ClassA1;PlateVoltage=124V
Total Harmonic Distortion
10.5 %
ClassA1;PlateVoltage=124V
Second Harmonic Distortion
7 %
ClassA1;PlateVoltage=124V
Third Harmonic Distortion
7.5 %
ClassA1;PlateVoltage=124V
Power Output
0.6 W
ClassA1;PlateVoltage=124V
Plate Voltage
135 V
ClassA1;PlateVoltage=135V
Screen Voltage
135 V
ClassA1;PlateVoltage=135V
Control Grid Voltage
-13.5 V
ClassA1;PlateVoltage=135V
PeakAFSignalVoltage
9.2 V
ClassA1;PlateVoltage=135V
Zero Signal Plate Current
8.7 mA
ClassA1;PlateVoltage=135V
Zero Signal Screen Current
2.5 mA
ClassA1;PlateVoltage=135V
Maximum Signal Plate Current
9.7 mA
ClassA1;PlateVoltage=135V
Maximum Signal Screen Current
3.6 mA
ClassA1;PlateVoltage=135V
Load Resistance
9000 ohm
ClassA1;PlateVoltage=135V
Total Harmonic Distortion
11 %
ClassA1;PlateVoltage=135V
Second Harmonic Distortion
8 %
ClassA1;PlateVoltage=135V
Third Harmonic Distortion
7 %
ClassA1;PlateVoltage=135V
Power Output
0.55 W
ClassA1;PlateVoltage=135V
Power Output
0.65 W
PeakAFGridVoltage=11V;TotalDistortion=13%
Power Output
0.75 W
PeakAFGridVoltage=13.5V;TotalDistortion=18%

Characteristic

Plate Resistance
133000 ohm
ClassA1;PlateVoltage=90V
Transconductance
1500 uS
ClassA1;PlateVoltage=90V
Plate Resistance
145000 ohm
ClassA1;PlateVoltage=124V
Transconductance
1500 uS
ClassA1;PlateVoltage=124V
Plate Resistance
160000 ohm
ClassA1;PlateVoltage=135V
Transconductance
1550 uS
ClassA1;PlateVoltage=135V