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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-614

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BrandNational Electronics, Inc.
ClassInert-Gas-Filled Rectifier Tube
Base4-pin

Construction

Primary TypeRectifier
Rectifier TypeGas-filled
EnvelopeGlass
Base Material4-pin
SectionsSingle

Filament / Heater

MaterialXenon-filled type
Warm-up Time20s

Absolute Maximum Ratings

Plate Voltage900 V
Cathode Current2500 mA

Audio Performance

Key Features
  • Xenon-filled
  • Efficiency
  • Compactness
  • Wide temperature limits
  • Sturdy design

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Rectifier250 V———2500 mA

Application Notes

Designed especially for industrial power rectifier applications up to 250 volts dc. Light filament before applying load. All data based on returns to filament center tap.

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