Tube-number record
UF 42
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BrandPHILIPS
ClassR.F. Pentode
BaseRimlock
Filament21 V @ 100 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect, AC or DC series supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2 W
Grid 2 Voltage250 V
Grid 1 Voltage-100 V
Cathode Current15 mA
H-C Voltage150 V
Audio Performance
Key Features
- Wide-band amplifier
- Indirectly heated
- Series heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| wide-band amplifier | 170 V | — | — | — | 10 mA |
Application Notes
Designed for use as a wide-band R.F. pentode in series-supply circuits.
Datasheets
Datasheet: UF42.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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