Tube-number record
3CU3A
0 archive entries
3CU3A is a tube type in the TubeDatabase archive (class: High-Voltage Rectifier). Recorded specifications: brand RCA, year 1970, construction Rectifier, base Small-Wafer Octal with External Barriers, socket Octal, and maximum plate voltage 33000 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassHigh-Voltage Rectifier
BaseOctal
Construction
Primary TypeRectifier
Rectifier TypeHalf-Wave
EnvelopeT9
Base MaterialSmall-Wafer Octal with External Barriers
Sections1
Filament / Heater
MaterialCoated Filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier Characteristics | 50 V | — | — | — | 7 mA |
Application Notes
Specifically designed for operation as a pulsed rectifier tube in 525-line, 30-frame television systems. Requires shielding to protect against X-radiation.
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