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

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Tube-number record

3EH7/XF183

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BrandAmperex
ClassPentode
BaseNoval (B9A)
Filament3.4 V @ 600 mA

Construction

Primary TypePentode
EnvelopeT6 1/2
Sections1

Filament / Heater

Heater NotesControlled warm-up series string operation

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation2.5 W
Grid 2 Voltage250 V
Grid 1 Voltage-50 V
Cathode Current20 mA
H-C Voltage150 V

Audio Performance

Key Features
  • Frame grid
  • Remote cut-off
  • Controlled warm-up

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Characteristics200 V12500500000—12 mA
Remote Cut-off Point 1200 V1250———
Remote Cut-off Point 2200 V625———
Remote Cut-off Point 3200 V125———

Application Notes

Designed for use as an IF amplifier in television receivers. High variable transconductance enables simplified broad band amplifiers with high stability.

Filters

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Manufacturers

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