12BY3
0 Tubes in archive
BrandToshiba
ClassHalf-wave vacuum rectifier
BaseMiniature Button 9-Pin
Filament12.6V @ 450mA
Construction
Primary TypeHeater-cathode type diode
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 | 21V | - | - | - | 250mA |
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