Tube-number record
3A3A
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BrandMAZDA BELVU
ClassHigh Tension Rectifier Diode
BaseOctal
Filament3.15 V @ 220 mA
Construction
Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeT 9-33
Base MaterialPlastic (Octal)
Sections1
Filament / Heater
Heater NotesIndirect heating
Absolute Maximum Ratings
Plate Voltage30000 V
Cathode Current2 mA
Audio Performance
Key Features
- Indirectly heated cathode
- X-ray emission warning above 18 kV
- Anti-corona ring requirement
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 100 V | — | — | — | 7 mA |
Application Notes
Designed for T.H.T. power supply in 90 degree color cathode-ray tubes. Pins 1, 3, 5, and 8 must be connected to pin 7 directly or via an anti-corona ring.
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