Tube-number record
6BK11
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BrandSylvania
ClassTriple Triode
BaseCompactron
Filament6.3 V @ 600 mA
Construction
Primary TypeTriode
EnvelopeT-9
Sections3
Filament / Heater
Heater NotesHeater warm-up time: 11 seconds
Absolute Maximum Ratings
H-C Voltage200 V
Audio Performance
Key Features
- Two 100 mu triodes
- One 70 mu triode
- Internal shield between Sections 1 and 3
- Separate pin connections for all cathodes, grids and plates
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 | 250 V | 1550 | 45000 | 70 | 1.6 mA |
| Sections 2 and 3 | 250 V | 1600 | 62500 | 100 | 1.2 mA |
Application Notes
Heater warm-up time is defined as the time required for the voltage across the heater to reach 80% of the rated heater voltage after applying four times rated heater voltage.
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