Tube-number record
LD-550A
0 archive entries
LD-550A is a tube type in the TubeDatabase archive (class: Traveling Wave Tube CW Amplifier). Recorded specifications: brand Nippon Electric Co., Ltd., construction Other / special, base Tube Mount: 4.6 Kg, socket Waveguide, maximum plate voltage 3400 V, and maximum plate dissipation 56 W. The archive does not yet hold a photographed example of this type.
BrandNippon Electric Co., Ltd.
ClassTraveling Wave Tube CW Amplifier
BaseWaveguide
Filament6.3 V @ 730 mA
Construction
Primary TypeOther / special
Envelope0.25 Kg
Base MaterialTube Mount: 4.6 Kg
SectionsPPM Focused
Filament / Heater
Heater NotesUnipotential oxide coated cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation at 6860 Mc/s | 2500 V | — | — | — | 35 mA |
Application Notes
Convection cooling is sufficient when the tube is used in a horizontal position. For any other mounting position, forced air may be required to maintain collector seal temperature below 130°C. Helix current increases with tube life; 2 mA indicates end of life.
0 results