1B77
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BrandAmperex
ClassBeta Counter Tube
BaseScrew Terminal / Body Contact
Construction
Primary TypeGeiger-Müller Counter Tube
EnvelopeMetal Shell with Mica Window
Base MaterialStainless Steel
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1200 V
Audio Performance
Key Features
- Mica window
- Stainless steel cathode
- Quenched argon filling
- Infinite life expectancy
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Counter Operation | 1200V | - | - | - | - |
Application Notes
Mica windows 5.6mg/cm2 thick will pass all beta radiation of energy in excess of 57 KEV when the source is in close proximity to the window.
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