Data set 01
1932 Cunningham Radio Tubes
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Grid-plate capacitance
0.01 pF
Published direct interelectrode capacitance
Voltage Tetrode ·Tetrode
35
Variable-mu or remote-cutoff screen-grid tetrode for controlled RF or IF voltage amplification, permitting smooth receiver gain control over an extended grid-bias range.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 5E
- Socket code
- UX5
- Base pins
- 5
- Nominal heater
- 2.5 V / 1.75 A
Description
Variable-mu screen-grid tetrode, source designation 35/51.
Socket description
Small 5-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 5E
- Socket code
- UX5
- Base pins
- 5
- Nominal heater voltage
- 2.5 V
- Nominal heater current
- 1.75 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
5E - 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
Tetrode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 400000 Ω
- Transconductance
- 0.00105 S
- Amplification factor
- 420
- Max plate voltage
- 250 V
- Max screen voltage
- 90 V
Published promoted fields populated by semantic section ownership.
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
Tetrode
Other
Maximum plate voltage
250 V
Published datasheet rating
Maximum screen voltage
90 V
Published datasheet rating
Plate voltage
250 V
ClassA
Screen voltage
90 V
ClassA
Control-grid bias
3 V
ClassA
Plate current
6.5 mA
ClassA
Screen current
2.5 mA
ClassA
Characteristic
Plate resistance
400000 ohm
Published datasheet characteristic
Transconductance
1050 µS
Published datasheet characteristic
Amplification factor
420
Published datasheet characteristic
Heater/filament voltage
2.5 V
Published heater/filament rating
Heater/filament current
1.75 A
Published heater/filament rating
Capacitance
Input capacitance
5 pF
Published capacitance
Output capacitance
10.5 pF
Published capacitance
Grid-to-plate capacitance
0.007 pF
Published capacitance
Data set 03
193X Cunningham
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristics
Heater/filament voltage
2.5 V
Published nominal
Heater/filament current
1.75 A
Published nominal
Transconductance
1050 uS
Published characteristic
Data set 04
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristics
Heater or filament voltage
2.5 V
Published nominal value
Heater or filament current
1.75 A
Published nominal value
Transconductance
1050 µS
Published representative/high operating value
Amplification factor
420
Published representative/high operating value
Plate resistance
400000 ohm
Published representative/high operating value
Remote-cutoff transconductance
15 µS
At -40 V bias
Other
Application
RF amplifier; IF amplifier; mixer
Published use
Data set 05
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
HeaterOrFilamentVoltage
2.5 V
HeaterOrFilamentCurrent
1.75 A
Data set 06
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Capacitance
Input capacitance
5.3 pF
Section1
Output capacitance
10.5 pF
Section1
Grid-to-plate capacitance
0.007 pF
Section1
Other
Plate voltage
250 V
ClassA
Screen voltage
90 V
ClassA
Control-grid voltage
-3 V
ClassA
Plate current
6.5 mA
ClassA
Screen current
2.5 mA
ClassA
Characteristic
Plate resistance
400000 Ω
ClassA
Transconductance
1050 µS
ClassA