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Tube Database (7,341 tube types · 1,270 archive entries)

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Z502S vacuum tube outline illustration

Tube-number record

Z502S

0 archive entries

Z502S is a tube type in the TubeDatabase archive (class: Decade Selector Tube). Recorded specifications: brand Philips, construction Other / special, and socket Duodecal. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassDecade Selector Tube
BaseDuodecal

Construction

Primary TypeOther / special
EnvelopeGlass
Sections10 main cathodes

Filament / Heater

Absolute Maximum Ratings

Cathode Current0.55 mA

Audio Performance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Double pulse drive475 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

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Key Features
    • Cold cathode
    • Gas-filled
    • Bi-directional
    • Visual indication
    • 10 main cathodes separately brought out