Tube-number record
CK5889
0 archive entries
CK5889 is a tube type in the TubeDatabase archive (class: Subminiature Electrometer Pentode). Recorded specifications: brand Raytheon, year 1954, construction Pentode, base Glass, socket Subminiature, and maximum plate voltage 45 V. The archive does not yet hold a photographed example of this type.
BrandRaytheon
ClassSubminiature Electrometer Pentode
BaseSubminiature
Construction
Primary TypePentode
EnvelopeT-3 Glass
Base MaterialGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage45 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 12 V | 10 | — | 250 | 0.004 mA |
| Triode | 10.5 V | 150 | — | — | 0.18 mA |
Application Notes
The CK5889 is electrically similar to type CK5886 but with a lower filament current. Connection to the guard ring should be made by means of a spring clip or twisted wire lead. Continuous operation is recommended for exacting requirements.
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