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SP.61

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BrandMazda
ClassH.F. Pentode
BaseMazda Octal
Filament6.3V @ 600mA

Construction

Primary TypePentode
EnvelopeMetallised
Sections1

Filament / Heater

Heater NotesA.C. Mains

Absolute Maximum Ratings

Plate Voltage250 V
Grid 2 Voltage250 V

Audio Performance

Key Features
  • Screened H.F. Pentode
  • Metallised bulb
  • Mazda octal base
  • Small dimensions

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
H.F. Amplifier200V8500--8.5mA
H.F. Amplifier200V8500--10.9mA
H.F. Amplifier250V8400--11mA

Application Notes

Specifically designed for H.F. and I.F. stages of television receivers with low input loss at high frequencies. Suitable for video output with loads down to 2600-3000 ohms. Capacity change due to space charge can be minimized by biasing the suppressor grid.

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