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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

2J2

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BrandSiemens Edison Swan Limited
ClassHigh Voltage Half Wave Rectifier
BaseNoval (B9A)
Filament2 V @ 350 mA

Construction

Primary TypeRectifier
Rectifier TypeIndirectly heated
EnvelopeT6 1/2
SectionsSingle

Filament / Heater

Heater NotesOne end of heater connected to pins 1, 4, 6, 9; the other end to pins 2, 5, 8.

Absolute Maximum Ratings

Plate Voltage23500 V
Cathode Current0.2 mA

Audio Performance

Key Features
  • Flyback E.H.T. supplies
  • Unrestricted mounting position
  • Clear bulb

Application Notes

Pins 3 and 7 are floating but must not be left unconnected. They should be connected to the external circuit with not more than 10 Ohms between adjacent pins.

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