Tube-number record
MH40
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BrandMarconi
ClassLow Noise Level Triode
Base5-pin
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage200 V
Audio Performance
Key Features
- Low noise level
- Rigid electrode system
- Special steatite insulators
- Low microphony
- Theoretical shot noise limit
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | — | 2500 | 18000 | 45 | — |
Application Notes
Intended for early stages of high gain amplifiers. Operate with the lowest anode current possible consistent with the gain required. Supplied in clear glass only.
Datasheets
Datasheet: MH40.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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