Tube-number record
Z502S
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BrandPhilips
ClassDecade Selector Tube
BaseDuodecal
Construction
Primary TypeOther / special
EnvelopeGlass
Sections10 main cathodes
Filament / Heater
Absolute Maximum Ratings
Cathode Current0.55 mA
Audio Performance
Key Features
- Cold cathode
- Gas-filled
- Bi-directional
- Visual indication
- 10 main cathodes separately brought out
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Double pulse drive | 475 V | — | 820000 | — | 0.34 mA |
Application Notes
For visual indication the tube is viewed through the dome of the envelope. K0 is aligned with pin 11 within +/- 12 degrees. Mounting position is arbitrary.
Datasheets
Datasheet: Z502S.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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