Tube-number record
PLIOTRON 5661
0 archive entries
PLIOTRON 5661 is a tube type in the TubeDatabase archive (class: Voltage amplifier pentode). Recorded specifications: brand General Electric, year 1947, construction Pentode, socket Octal, maximum plate voltage 300 V, and maximum plate dissipation 4 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassVoltage amplifier pentode
BaseOctal
Filament12.6 V @ 0.15 mA
Construction
Primary TypePentode
EnvelopeMT-9
SectionsSingle
Filament / Heater
Heater NotesIndirectly Heated
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 100 V | 2350 | 120000 | — | 13 mA |
| Class A Amplifier | 250 V | 2000 | 800000 | — | 9.2 mA |
Application Notes
The 5661 is a voltage amplifier pentode similar to the 12SK7 designed for reliable performance under conditions of severe vibration and intermittent operation.
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