Tube-number record
TBW 12/100
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TBW 12/100 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand Philips, construction Triode, base Metal, socket Special / none, maximum plate voltage 15000 V, and maximum plate dissipation 100000 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeMetal-Glass
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. class C telegraphy | 12000 V | 50000 | 540 | 27 | 12000 mA |
| H.F. class B telephony | 12000 V | — | — | 27 | 12200 mA |
| L.F. class B amplifier (two tubes) | 12000 V | — | — | 27 |
Application Notes
To keep seal temperatures below 180 °C, air flow must be started upon or before application of filament voltage. Above 6 MHz, additional air cooling is mandatory for anode and grid seals.
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