Data set 01
1932 Cunningham Radio Tubes
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Grid-plate capacitance
0.015 pF
Published direct interelectrode capacitance
Voltage Tetrode ·Tetrode
32
Screen-grid tetrode intended for receiver voltage amplification, detector, oscillator, or general Class-A service as documented by the manufacturer.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 4K
- Socket code
- UX4
- Base pins
- 4
- Nominal heater
- 2 V / 60 mA
Description
Screen-grid high-frequency amplifier tetrode.
Socket description
Medium-shell UX 4-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 4K
- Socket code
- UX4
- Base pins
- 4
- Nominal heater voltage
- 2 V
- Nominal heater current
- 60 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
4K - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1F | — | F — Filament | Unverified EIA Base Connections, printed page 127, 4K |
| PIN2P | A | P — Plate (Anode) | Unverified EIA Base Connections, printed page 127, 4K |
| PIN3G2 | A | G2 — Screen Grid | Unverified EIA Base Connections, printed page 127, 4K |
| PIN4F | — | F — Filament | Unverified EIA Base Connections, printed page 127, 4K |
| CAP1G1 | A | G1 — Control Grid | Unverified EIA Base Connections, printed page 127, 4K |
Section ratings
1 physical section, each with unique specifications.
Section 1
Tetrode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 1200000 Ω
- Transconductance
- 0.00064 S
- Amplification factor
- 780
- Max plate voltage
- 180 V
- Max screen voltage
- 67.5 V
Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.
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
180 V
Published datasheet rating
Maximum screen voltage
67.5 V
Published datasheet rating
Plate voltage
180 V
ClassA
Screen voltage
67.5 V
ClassA
Control-grid bias
3 V
ClassA
Plate current
1.7 mA
ClassA
Characteristic
Plate resistance
1200000 ohm
Published datasheet characteristic
Transconductance
650 µS
Published datasheet characteristic
Amplification factor
780
Published datasheet characteristic
Heater/filament voltage
2 V
Published heater/filament rating
Heater/filament current
60 mA
Published heater/filament rating
Capacitance
Input capacitance
5.3 pF
Published capacitance
Output capacitance
10.5 pF
Published capacitance
Grid-to-plate capacitance
0.015 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 V
Published nominal
Heater/filament current
60 mA
Published nominal
Transconductance
780 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 V
Published nominal value
Heater or filament current
60 mA
Published nominal value
Transconductance
650 µS
Published representative/high operating value
Amplification factor
780
Published representative/high operating value
Plate resistance
1200000 ohm
Published representative/high operating value
Capacitance
Grid-to-plate capacitance
0.007 pF
With shield can
Data set 05
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
HeaterOrFilamentVoltage
2 V
HeaterOrFilamentCurrent
60 mA
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
0.015 pF
Section1
Other
Plate voltage
180 V
ClassA
Screen voltage
67.5 V
ClassA
Control-grid voltage
-3 V
ClassA
Plate current
1.7 mA
ClassA
Screen current
0.4 mA
ClassA
Characteristic
Plate resistance
1200000 Ω
ClassA
Transconductance
650 µS
ClassA
Data set 07
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Plate Voltage
180 V
ClassA1
Characteristic
Plate Resistance
1200000 ohm
PlateVoltage=180V
Transconductance
650 uS
PlateVoltage=180V