Tube-number record
SP.42
0 archive entries
SP.42 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Mazda, construction Pentode, socket Octal, and maximum plate voltage 200 V. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassPentode
BaseOctal
Filament4 V @ 0.95 mA
Construction
Primary TypePentode
EnvelopeMetallised bulb, small dimensions
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage200 V
Grid 2 Voltage200 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation Point 1 | 200 V | 9000 | — | — | 27 mA |
| Operation Point 2 | 200 V | 9000 | — | — | 20 mA |
| Operation Point 3 | 200 V | 9000 | — | — | 16 mA |
Application Notes
Recommended screen voltage of 115V when used with common D.C. restoring circuits. For video output, an anode load of 3000-4000 ohms is typical depending on synchronising separator requirements.
Datasheets
Datasheet: SP42.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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