6.LD.20
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BrandMAZDA
ClassDOUBLE DIODE TRIODE
BaseB8A
Filament6.3V @ 0.2mA
Construction
Primary TypeIndirectly heated
EnvelopeGlass
Base MaterialStandard
SectionsDouble Diode Triode
Filament / Heater
Heater NotesIndirectly heated — for parallel operation
Absolute Maximum Ratings
Plate Voltage300 V
H-C Voltage150 V
Audio Performance
Key Features
- Tentative rating
- Internal shield
- Parallel operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Resistance Coupled Amplifier (1) | 260V | - | 47000 | 19.5 | 2mA |
| Resistance Coupled Amplifier (2) | 260V | - | 100000 | 21.5 | 1.3mA |
Application Notes
It is recommended that Diode 2 should be used for detection. Pin 1 should preferably be connected to earth potential.
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