Tube-number record
HIGH-VACUUM PHOTOTUBE
0 archive entries
HIGH-VACUUM PHOTOTUBE is a tube type in the TubeDatabase archive (class: Phototube). Recorded specifications: brand RCA, year 1946, construction High vacuum, base Non-hygroscopic, and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPhototube
Construction
Primary TypeHigh vacuum
Base MaterialNon-hygroscopic
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Key Features
- Non-hygroscopic base
- Low leakage
- High humidity resistance
Application Notes
For applications critical as to leakage under high humidity conditions. Insures resistance between anode and cathode pins about 10 times higher than conventional bases.
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