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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

NL-627

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BrandNational Electronics, Inc.
ClassRectifier Tube
BaseScrew / Edison base

Construction

Primary TypeMercury Vapor
Rectifier TypeHalf-wave
EnvelopeGlass

Filament / Heater

Warm-up Time120s

Absolute Maximum Ratings

Plate Voltage1000 V
Cathode Current20000 mA

Audio Performance

Key Features
  • Mercury filled
  • Sturdy design
  • High inverse voltage capability

Application Notes

Designed especially for industrial power rectifier applications up to 250 volts dc. Light filament before applying load.

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