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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

V 2018

0 archive entries

BrandTungsram
ClassHalf-wave Rectifier
Base4-pin
Filament20 V @ 180 mA

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
Sections1

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage250 V
Cathode Current60 mA
H-C Voltage320 V

Audio Performance

Key Features
  • Indirekte Heizung
  • Kleiner innerer Widerstand
  • Low voltage drop
  • Suitable for universal AC/DC operation

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