Tube-number record
UF 43
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BrandPHILIPS
ClassPentode
BaseRimlock
Filament21 V @ 100 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; series supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3.75 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current20 mA
H-C Voltage150 V
Audio Performance
Key Features
- variable mutual conductance
- wide-band amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. or I.F. amplifier | 100 V | 5800 | 300000 | — | 7.5 mA |
| R.F. or I.F. amplifier | 170 V | 6300 | 300000 | — | 15 mA |
| R.F. or I.F. amplifier | 200 V | 6400 | 400000 | — | 15 mA |
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