Tube-number record
PB 2/200
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BrandPhilips
ClassPENTODE
BaseSpecial / none
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialMetal/Ceramic
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation110 W
Grid 2 Voltage400 V
Grid 1 Voltage-200 V
Cathode Current285 mA
Audio Performance
Power Output400 W
Key Features
- thoriated tungsten filament
- direct heating
- high frequency amplifier
- class C telegraphy
- class B telephony
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. class C telegraphy | 2000 V | 11000 | — | — | 190 mA |
| H.F. class B telephony | 2000 V | — | — | — | 77.5 mA |
| L.F. class B amplifier (two valves) | 2000 V | — | — | — |
Application Notes
Mounting position: vertical with base up or down. If base up, it is recommended to support the tube.
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