VARIABLE MU R.F. PENTODE
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BrandMazda
ClassRF Pentode
BaseB8A
Filament6.3V @ 200mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated — for parallel operation
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Cathode Current10 mA
H-C Voltage150 V
Audio Performance
Key Features
- Variable Mu
- Indirectly heated
- Internal shield
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 250V | 2300 | 1700000 | - | 7mA |
| Cut-off (Condition 1) | - | 23 | - | - | - |
| Cut-off (High Vg2) | - | 23 | - | - | - |
Application Notes
In use pins 3 and 4 should be joined and earthed.
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