Voltage - Triode (single) ·Triode
Receiving triode for amplification, detection, oscillator, or general electronic service as documented by the manufacturer.
OSRAM MHL4 triode for amplification, detection, or power-output service as specified in the supplied datasheet.
European 4-pin base
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published characteristics/ratings were promoted when unambiguous; remaining operating values are preserved in TUBE_SECTION_PARAMETER.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Published operating data
See source
Operating curves/table are present on the approved one-page source; values not promoted unless unambiguous in searchable text.
Data set 02
Published operating points and test conditions from this source.
Heater/Filament Voltage
4 V
Published datasheet value
Heater/Filament Current
1 A
Published datasheet value
Maximum Anode Voltage
250 V
Published datasheet value
Plate Resistance
8000 ohm
Published datasheet value
Mutual Conductance
2500 µS
Published datasheet value
Amplification Factor
20
Published datasheet value
Data set 03
Published operating points and test conditions from this source.
Filament/heater voltage
4 V
Filament/heater current
1 A
Maximum anode voltage
200 V
Maximum anode dissipation
4 W
Amplification factor
20
Transconductance
2500 uS
Plate resistance
8000 ohm