Voltage - Triode (single) ·Triode
Low-noise, low-microphony OSRAM triode for early stages of high-gain amplifiers.
OSRAM MH40 triode for amplification, detection, or power-output service as specified in the supplied datasheet.
European 5-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
Promoted values mapped from printed rating/approximate-data tables; additional operating points and capacitances retained as parameters.
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.
Heater/Filament Voltage
4 V
Published datasheet value
Heater/Filament Current
1 A
Published datasheet value
Maximum Anode Voltage
200 V
Published datasheet value
Plate Resistance
18750 ohm
Published datasheet value
Mutual Conductance
2400 µS
Published datasheet value
Amplification Factor
45
Published datasheet value
Data set 02
Published operating points and test conditions from this source.
Plate Resistance
8000 ohm
Amplification Factor
45
Grid-Anode Capacitance
7.3 pF
Anode-Cathode Capacitance
4 pF
Grid-Cathode Capacitance
6 pF
Low Noise Design
1 boolean
Low Microphony Design
1 boolean