Tube-number record
8270
0 archive entries
8270 is a tube type in the TubeDatabase archive (class: Half-wave Rectifier). Recorded specifications: brand Amperex, construction Other / special, socket 4-pin, and maximum plate voltage 21000 V. The archive does not yet hold a photographed example of this type.
BrandAmperex
ClassHalf-wave Rectifier
Base4-pin
Construction
Primary TypeOther / special
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-Coated
Warm-up Time90s
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Maximum Ratings at 21kV PIV | 21000 V | — | — | — | 2500 mA |
| Maximum Ratings at 15kV PIV | 15000 V | — | — | — | 3000 mA |
| Maximum Ratings at 2.5kV PIV | 2500 V | — | — | — |
Application Notes
A phase shift of 90 degrees +/- 30 degrees between anode and filament and/or use of a center-tapped filament transformer is recommended. After transport or long interruption, a 60-minute warmup is required.
Datasheets
Datasheet: 8270.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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