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

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Tube-number record

23FMP4

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BrandRCA
ClassPicture Tube
Filament6.3 V @ 450 mA

Construction

Primary TypeRectangular Glass
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesHeater current tolerance is +/- 20 mA

Absolute Maximum Ratings

Audio Performance

Key Features
  • PAN-O-PLY—INTEGRAL IMPLOSION PROTECTION
  • Aluminized screen
  • 110° magnetic deflection
  • No ion-trap magnet required

Application Notes

The 23FMP4 is the same as the 23ETP4 except for the heater current specification.

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