Tube-number record
PL33
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PL33 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mullard, construction Pentode, socket Octal, maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassOutput Pentode
BaseOctal
Filament19 V @ 0.3 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesSuitable for series heater strings in D.C./A.C. receivers
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage275 V
Grid 1 Voltage-1.3 V
Cathode Current55 mA
H-C Voltage300 V
Audio Performance
Typical THD10%
Power Output3.3 W
Key Features
- High sensitivity
- 9W anode dissipation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Condition 1) | 175 V | 8000 | 60000 | 23 | 24 mA |
| Class A Amplifier (Condition 2) | 200 V | 8600 | 55000 | 23 | 28 mA |
| Class A Amplifier (Condition 3) | 225 V | 9000 | 50000 | 23 | 32 mA |
Application Notes
Suitable for use in frame time base or audio output stage of D.C./A.C. television receivers.
Datasheets
Datasheet: PL33.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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