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

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Tube-number record

NU-6355

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BrandNational Union
ClassTwin Indicator Tube
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 140 mA

Construction

Primary TypeDisplay / CRT
EnvelopeT-5 1/2
SectionsTwin

Filament / Heater

Heater NotesFilament voltage rating 6.3V +/- 10% (6.9V max)

Absolute Maximum Ratings

Plate Voltage275 V
Grid 2 Voltage190 V
H-C Voltage100 V

Audio Performance

Key Features
  • Small size
  • No exposed exhaust tip
  • Rugged design
  • Military applications

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operating Conditions250 V————

Application Notes

Designed to provide a built-in test indicator in electronic equipment. Characteristics are similar to those of the 6AF6G.

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