1P28
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BrandRCA
ClassMultiplier Phototube
BaseSmall-Shell Submagnal 11-Pin
Construction
Primary TypeMultiplier Phototube
EnvelopeT-9
Base MaterialNon-hygroscopic
Sections9-Stage
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1250 V
Grid 2 Voltage250 V
Cathode Current5 mA
Audio Performance
Key Features
- 9-Stage
- S-5 Response
- Ultraviolet sensitive down to 2000 angstroms
- High secondary-emission amplification
- Small DC dark current
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 100 volts per dynode stage | 1000V | - | - | 1000000 | - |
| 75 volts per dynode stage | 725V | - | - | 150000 | - |
Application Notes
The IP28 is recommended for use in spectrophotometry, scintillation counters, and scientific research involving low ultraviolet radiation levels.
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