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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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NL-627 vacuum tube outline illustration

Tube-number record

NL-627

0 archive entries

NL-627 is a tube type in the TubeDatabase archive (class: Rectifier Tube). Recorded specifications: brand National Electronics, Inc., construction Mercury Vapor, socket Screw / Edison base, and maximum plate voltage 1000 V. The archive does not yet hold a photographed example of this type.

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

Application Notes

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

Filters

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Manufacturers

Brands

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    Cathode Current20000 mA

    Audio Performance

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