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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

LS 2

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BrandTelefunken
ClassGegentakttriode
BaseSolder-in

Construction

Primary TypeTriode
EnvelopeGlass
Sections2

Filament / Heater

MaterialDirectly heated

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation2.5 W
Cathode Current25 mA

Audio Performance

Key Features
  • Luftfahrtrohre
  • Gegentakt-Triode
  • Directly heated cathode

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Kennwerte150 V2050—1715 mA

Application Notes

The tube should be soldered into the circuit; no socket is provided.

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