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

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Tube-number record

21LU8

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BrandGeneral Electric
ClassCompactron Triode-Pentode
BaseCompactron
Filament21 V @ 450 mA

Construction

Primary TypeMulti-section
EnvelopeCompactron
Sections2

Filament / Heater

Heater NotesHeater current tolerance +/- 0.03 Amperes

Absolute Maximum Ratings

Audio Performance

Key Features
  • Medium-mu triode
  • Beam pentode
  • Designed for vertical-deflection oscillator and amplifier applications

Application Notes

The 21LU8 is identical to the 6LU8 except for heater characteristics and ratings.

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