Tube-number record
4461
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BrandRCA
ClassPhotomultiplier Tube
BaseSpecial / none
Construction
Primary Type10-stage, head-on, flat-faceplate
EnvelopeT12
Sections10-stage
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1500 V
Cathode Current0.002 mA
Audio Performance
Key Features
- Rugged vibration-resistant structure
- Electrostatically focused dynode stages
- Flat faceplate
- High sensitivity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Supply Voltage E = 1250V | 1250 V | — | — | 170000 | — |
| Supply Voltage E = 750V | 750 V | — | — | 3700 | — |
Application Notes
Especially useful in missile and rocket service where severe environmental conditions may be encountered. Recommended average anode current well below 1 mA for stability.
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