Tube-number record
12DY8
0 archive entries
12DY8 is a tube type in the TubeDatabase archive (class: Triode-Tetrode). Recorded specifications: brand Sylvania, construction Tetrode, socket Noval (B9A), and maximum plate voltage 16 V. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassTriode-Tetrode
BaseNoval (B9A)
Filament12.6 V @ 350 mA
Construction
Primary TypeTetrode
EnvelopeT-6 1/2
Sections2
Filament / Heater
Heater NotesDesigned for automotive service from a nominal 12-volt battery source (10.0 to 15.9V).
Absolute Maximum Ratings
Plate Voltage16 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 12.6 V | 2000 | 10000 | 20 | 1.2 mA |
| Tetrode Section | 12.6 V | 6000 | 5000 | — | 14 mA |
| Tetrode Section - Relay Service (Low) | 10 V | — | — | — | 5 mA |
Application Notes
The Sylvania Type 12DY8 is a double section tube featuring a tetrode designed for relay service in 'signal-seeker' applications and a sharp-cutoff triode for general purpose use in 12-volt automotive systems.
Datasheets
Datasheet: 12DY8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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