13D9
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BrandBRIMAR
ClassDouble Triode
BaseB9A
Filament6.3V @ 300mA
Construction
Primary TypeDouble Triode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesSeries or parallel connection
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.5 W
Cathode Current20 mA
H-C Voltage90 V
Audio Performance
Key Features
- Low noise
- Design Centre Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 200V | 5700 | 8900 | 50 | 10mA |
Application Notes
Measured without an external shield.
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