Tube-number record
FZ 21V
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BrandAEG
ClassVacuum Phototube
BaseSpecial / none
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Cathode Current0.01 mA
Audio Performance
Key Features
- Blue sensitive
- Vacuum photo-valve
- Cesium-Antimony cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operating Values | 100 V | — | 1000000 | — | 0.004 mA |
Application Notes
Continuous operation at maximum values results in a drop in sensitivity and shorter life. Limit values apply to intermittent operation with short 'On' times.
Datasheets
Datasheet: Fz21V.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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