Data set 01
1932 Cunningham Radio Tubes
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Grid-plate capacitance
0.01 pF
Published direct interelectrode capacitance
Voltage Pentode ·Pentode
57
Early triple-grid pentode designed for radio detector and high-gain voltage-amplifier service, with both pentode and triode-connected operating data.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 6F
- Socket code
- UX6
- Base pins
- 6
- Nominal heater
- 2.5 V / 1 A
Description
Triple-grid amplifier pentode; French-language source translated to English. The non-English source wording has been rendered in English.
Socket description
Small 6-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 6F
- Socket code
- UX6
- Base pins
- 6
- Nominal heater voltage
- 2.5 V
- Nominal heater current
- 1 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
6F - 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
- 1700000 Ω
- Transconductance
- 0.00151 S
- Amplification factor
- 2500
- Max plate voltage
- 250 V
- Max screen voltage
- 100 V
Values transcribed from the approved datasheet; additional published data retained as parameters.
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 02
1937 Raytheon Radio Receiving Tubes
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Grid-to-plate capacitance
- to 0.007 pF
PentodeConnection; Maximum
Input capacitance
5 pF
PentodeConnection
Output capacitance
6.5 pF
PentodeConnection
Grid-to-plate capacitance
2 pF
TriodeConnection
Input capacitance
3 pF
TriodeConnection
Output capacitance
10.5 pF
TriodeConnection
Other
Plate voltage
100 V
ClassA; PentodeConnection
Screen voltage
100 V
ClassA; PentodeConnection
Grid bias
-3 V
ClassA; PentodeConnection
Plate current
2 mA
ClassA; PlateVoltage=100V
Screen current
0.8 mA
ClassA; PlateVoltage=100V
Plate voltage
250 V
ClassA; PentodeConnection
Screen voltage
100 V
ClassA; PentodeConnection; PlateVoltage=250V
Grid bias
-3 V
ClassA; PentodeConnection; PlateVoltage=250V
Plate current
2 mA
ClassA; PlateVoltage=250V
Screen current
0.5 mA
ClassA; PlateVoltage=250V
Grid bias
-8 V
ClassA; TriodeConnection
Plate current
6.5 mA
ClassA; TriodeConnection
Characteristic
Plate resistance
1 MOhm
ClassA; PlateVoltage=100V
Transconductance
1185 uS
ClassA; PlateVoltage=100V
Plate resistance
1.5 MOhm
ClassA; PlateVoltage=250V
Transconductance
1225 uS
ClassA; PlateVoltage=250V
Plate resistance
10500 ohm
ClassA; TriodeConnection
Transconductance
1900 uS
ClassA; TriodeConnection
Data set 03
193X Cunningham
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Heater/filament voltage
2.5 V
Published nominal
Heater/filament current
1 A
Published nominal
Transconductance
1250 uS
Published characteristic
Data set 04
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
BiasedDetector text
Data set 05
1946 Standard Telephone and Cables
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Anode to grid
3.5 pF
Published direct interelectrode capacitance
Grid to cathode
8.5 pF
Published direct interelectrode capacitance
Heater/filament nominal current
4.5 A
Nominal published value
Data set 06
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
2.5 V
HeaterOrFilamentCurrent
1 A
Data set 07
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
250 V
ClassA PentodeConnection
Screen-grid voltage
100 V
ClassA PentodeConnection
Grid voltage
-3 V
ClassA PentodeConnection
Plate current
2.3 mA
ClassA PentodeConnection
Screen-grid current
0.5 mA
ClassA PentodeConnection
Plate voltage
250 V
ClassA TriodeConnection
Grid voltage
-8 V
ClassA TriodeConnection
Plate current
6.5 mA
ClassA TriodeConnection
Characteristic
Plate resistance
10500 ohm
TriodeConnection
Data set 08
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
2.5 V
Nominal
Heater current
1 A
Nominal
Plate voltage
100 V
Published operating table; OperatingPoint1
Plate voltage
250 V
Published operating table; OperatingPoint2
Plate voltage
250 V
Published operating table; OperatingPoint3
Plate voltage
335 V
Published operating table; OperatingPoint4
Characteristic
Plate current
2 mA
Published operating table; OperatingPoint1
Plate current
2 mA
Published operating table; OperatingPoint2
Plate current
3.7 mA
Published operating table; OperatingPoint3
Plate current
2.7 mA
Published operating table; OperatingPoint4
Transconductance
1185 uS
Published operating table; OperatingPoint1
Transconductance
12256 uS
Published operating table; OperatingPoint2
Transconductance
1510 uS
Published operating table; OperatingPoint3
Transconductance
1325 uS
Published operating table; OperatingPoint4