ECL86
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BrandPhilips
ClassA.F. pre-amplifier and A.F. output tube
BaseNOVAL
Filament6.3V @ 700mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
Base MaterialGlass
SectionsTriode and Pentode
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; Parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation9 W
Grid 2 Voltage300 V
Cathode Current55 mA
H-C Voltage100 V
Audio Performance
Typical THD10%
Power Output4 W
Key Features
- Triode-Pentode
- Indirectly heated
- Low microphony
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode section | 250V | 1600 | - | 100 | 1.2mA |
| Pentode section | 250V | 10000 | 48000 | 21 | 36mA |
| Pentode Section Class AB (Two Tubes) | 300V | - | - | - | 37mA |
Application Notes
The triode section can be used without special precautions against microphonic effect in circuits in which an output of 50 mW is obtained at an input voltage of at least 4 mV (R.M.S.).
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