8434
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BrandTung-Sol
ClassHydrogen Diode Rectifier
BaseJumbo 4-pin
Filament5V @ 11500mA
Construction
Primary TypeDiode
Rectifier TypeGas-filled (Hydrogen)
EnvelopeGlass
Base MaterialMetal
SectionsSingle
Filament / Heater
Heater NotesBogey values provided.
Absolute Maximum Ratings
Plate Voltage20000 V
Cathode Current1800 mA
Audio Performance
Key Features
- Indirectly heated
- Hydrogen filled
- Virtually temperature free
- Nuclear radiation resistant
- Internal hydrogen reservoir
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 20000V | - | - | - | 1800mA |
Application Notes
The 8434 is designed for high voltage rectifier circuits. It acts as a direct plug-in replacement for mercury-vapor types 6894 and 575A. Unlike mercury tubes, it is not subject to splash problems and does not require long warmup times.
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