Tube-number record
NL-623
0 archive entries
NL-623 is a tube type in the TubeDatabase archive (class: Industrial Power Rectifier Tube). Recorded specifications: brand National Electronics, Inc., construction Other / special, socket Jumbo, and maximum plate voltage 500 V. The archive does not yet hold a photographed example of this type.
BrandNational Electronics, Inc.
ClassIndustrial Power Rectifier Tube
BaseJumbo
Construction
Primary TypeOther / special
Rectifier TypeHalf-wave
EnvelopeGlass
Sections1
Filament / Heater
MaterialMercury-vapor
Warm-up Time120s
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 150 V | — | — | — | 15000 mA |
Application Notes
All data based on returns to filament center tap. Filament must be lit before applying load. Designed for industrial applications up to 150 volts dc.
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