Tube-number record
CK6688 / CK6688A
0 archive entries
CK6688 / CK6688A is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Raytheon, construction Pentode, socket Noval (B9A), maximum plate voltage 210 V, and maximum plate dissipation 2.7 W. The archive does not yet hold a photographed example of this type.
BrandRaytheon
ClassPentode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
EnvelopeGlass T-6 1/2
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage210 V
Plate Dissipation2.7 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Wide-band amplifier | 190 V | 16500 | 90000 | — | 13 mA |
Application Notes
Special attention should be given to the temperature which the tubes are to be operated. Reliability will be seriously impaired if maximum bulb temperature is exceeded.
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