Tube-number record
7728
0 archive entries
7728 is a tube type in the TubeDatabase archive (class: Medium-mu twin triode). Recorded specifications: brand CBS, construction Dual triode, base Gold plated pins, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2.8 W. The archive does not yet hold a photographed example of this type.
BrandCBS
ClassMedium-mu twin triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA
Construction
Primary TypeDual triode
EnvelopeT-6 1/2
Base MaterialGold plated pins
Sections2
Filament / Heater
Heater NotesContinuous-wound coil heater; Series or Parallel operation
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Condition 1) | 100 V | 4000 | 15000 | 60 | 3.7 mA |
| Class A Amplifier (Condition 2) | 250 V | 5500 | 10900 | 60 | 10 mA |
Application Notes
Especially designed for use in measurement test equipment, instrumentation, and applications where extreme reliability and stable characteristics are required.
Datasheets
Datasheet: 7728.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results