Data set 01
1937 Raytheon Radio Receiving Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate Voltage
180 V
ClassA
Grid Voltage
-3 V
ClassA
Plate Current
2.8 mA
ClassA
Voltage - Triode (single) ·Triode
40
High-mu triode for resistance- or impedance-coupled voltage amplification and detector service, also used as a replacement in older receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 4D
- Socket code
- -
- Base pins
- 4
- Nominal heater
- 5 V / 250 mA
Description
High-mu triode for resistance- or impedance-coupled voltage amplification and detector service; also used as a replacement tube in older receivers.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 4D
- Socket code
- -
- Base pins
- 4
- Nominal heater voltage
- 5 V
- Nominal heater current
- 250 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
4D - 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
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 150000 Ω
- Transconductance
- 0.0002 S
- Amplification factor
- 30
- Max plate voltage
- 180 V
Electrical section extracted from approved source.
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
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater or filament voltage
5 V
Published nominal value
Heater or filament current
250 mA
Published nominal value
Transconductance
200 µS
Published representative/high operating value
Amplification factor
30
Published representative/high operating value
Plate resistance
150000 ohm
Published representative/high operating value
Other
Application
Resistance-coupled or impedance-coupled voltage amplifier/detector
Published use
Data set 03
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Plate Resistance
150000 ohm
Transconductance
200 µS
Amplification Factor
30
Other
Maximum Plate Voltage
180 V
Plate Voltage
135 V
Plate Current
0.2 mA
Load Impedance
250000 ohm
Data set 04
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate Voltage
180 V
ClassA
Grid Voltage
-3 V
ClassA
Plate Current
2.8 mA
ClassA