Tube-number record
12BY3
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BrandToshiba
ClassHalf-wave vacuum rectifier
BaseNoval (B9A)
Filament12.6 V @ 450 mA
Construction
Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeT6-1/2
Sections1
Filament / Heater
Warm-up Time11s
Absolute Maximum Ratings
Plate Voltage4500 V
Plate Dissipation4 W
Cathode Current140 mA
H-C Voltage4500 V
Audio Performance
Key Features
- 9-pin miniature double ended
- Low heater power consumption
- High inverse pulse voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Tube Voltage Drop | 21 V | — | — | — | 250 mA |
Datasheets
Datasheet: 12BY3.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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