Tube-number record
U107
0 archive entries
U107 is a tube type in the TubeDatabase archive (class: Half-wave rectifier). Recorded specifications: brand Marconi, year 1982, construction Other / special, socket Miniature 7-pin (B7G), and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassHalf-wave rectifier
BaseMiniature 7-pin (B7G)
Filament4 V @ 100 mA
Construction
Primary TypeOther / special
Rectifier TypeHalf-wave
EnvelopeTubular
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single phase half wave, Capacitor input | 250 V | — | — | — | 90 mA |
Application Notes
Free air circulation is preferable. If a retaining device in the form of a metal canister is used, the surfaces should be blackened. The temperature of the hottest part of the bulb must not exceed 250°C.
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