Tube-number record
5851
0 archive entries
5851 is a tube type in the TubeDatabase archive (class: Beam Pentode). Recorded specifications: brand National Union, year 1951, construction Pentode, socket Subminiature, maximum plate voltage 180 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandNational Union
ClassBeam Pentode
BaseSubminiature
Construction
Primary TypePentode
EnvelopeT-3
Sections1
Filament / Heater
Materialoxide coated
Absolute Maximum Ratings
Plate Voltage180 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 125 V | 1600 | 175000 | — | 5.5 mA |
| Doubler Operation at 400 MC | 125 V | — | — | — | 8 mA |
Application Notes
Designed for rugged applications in military service. Tested as a frequency doubler at 400 MHz. Tube leads may be soldered directly or used in Cinch socket #486929.
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