6AL9
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ClassHigh Mu Triode and Sharp Cutoff Pentode
Filament6.3V @ 820mA
Construction
Primary TypeTriode-Pentode
EnvelopeE12-70
Base Material12HE
SectionsHigh Mu Triode, Sharp Cutoff Pentode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage330 V
Grid 2 Voltage200 V
H-C Voltage200 V
Audio Performance
Key Features
- High Mu Triode
- Sharp Cutoff Pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 200V | 6300 | 9200 | 59 | 7.6mA |
| Pentode Section (Condition 1) | 55V | - | - | - | 56mA |
| Pentode Section (Condition 2) | 250V | 30000 | 40000 | - | 28mA |
Application Notes
General purpose amplifier (Triode section), Video amplifier (Pentode section)
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