Tube-number record
MU.2
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BrandMazda
ClassHalf Wave Mercury Vapour Rectifier
Base4-pin
Construction
Primary TypeDirectly heated
Rectifier TypeHalf-wave mercury vapour
EnvelopeGlass
Filament / Heater
Warm-up Time10s
Absolute Maximum Ratings
Plate Voltage12500 V
Cathode Current50 mA
Audio Performance
Key Features
- Directly heated
- Mercury vapour
- Delayed switching recommended for high current
- Standard 4-pin base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rating No. 1 - High Current delayed switching | 5000 V | — | — | — | 500 mA |
| Rating No. 2 - Low Current high voltage simultaneous switching | 12500 V | — | — | — | 50 mA |
Application Notes
The filament of the MU.2 should be allowed to come up to operating temperature before the anode voltage is applied. For average conditions the delay is approximately 10 seconds. If the load current does not exceed 50mA, simultaneous switching is allowed. After transit, run with heater volts on for 15 minutes before applying anode voltage.
Datasheets
Datasheet: MU2.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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