Tube-number record
Z803U
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Z803U is a tube type in the TubeDatabase archive (class: Gas-filled cold-cathode relay tube). Recorded specifications: brand Philips, construction Other / special, base Glass, socket Noval (B9A), and maximum plate voltage 290 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassGas-filled cold-cathode relay tube
BaseNoval (B9A)
Construction
Primary TypeOther / special
EnvelopeGlass
Base MaterialGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage290 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Burning | 105 V | — | — | — | 25 mA |
| Ignition | 280 V | — | — | — | — |
Application Notes
Designed for voltage control, sensitive relay circuits, and timers. Priming current of approximately 10 uA should flow to ensure stability in darkness. Priming resistor must be soldered directly to pin 6.
Datasheets
Datasheet: Z803U.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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