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

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Tube-number record

7A7

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BrandSylvania
ClassRemote Cut-off RF Pentode
BaseLoctal
Filament7 V @ 320 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesNominal ratings; Typical operation often uses 6.3V.

Absolute Maximum Ratings

Plate Voltage300 V
Plate Dissipation4 W
Grid 2 Voltage125 V
H-C Voltage90 V

Audio Performance

Key Features
  • Remote cut-off
  • Single-ended
  • Internal shield

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF/IF Service (Condition 1)100 V2350120000—13 mA
RF/IF Service (Condition 2)250 V2000800000—9.2 mA

Application Notes

Designed for RF or IF service in AC or DC receivers. Electrical characteristics are similar to the older types 6K7GT and 6SK7GT. Type 14A7 or 7B7 may be more suitable for AC-DC service due to lower heater current.

Datasheets

Datasheet: 7A7.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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