Use:
Glass octal tube type used as output amplifier tube in high-quality sound systems.
Notes: Requires an octal socket.
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Name: 7408 Use: Glass octal tube type used as output amplifier tube in high-quality sound systems. Notes: Requires an octal socket. |
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7408 Beam Power Pentode Characteristics Data Source. . . . . . . . . RC-29 Heater or Filament Voltage . 6.3 volts Heater or Filament Current . 0.45 amperes EIA Base . . . . . . . . . . 7AC Substitutes. . . . . . . . . 6V6GT |
Capacitances and Design Maximum Values: C/in. . . . . . . . . . . . 9 pf C/out . . . . . . . . . . . 7.5 pf C/gp. . . . . . . . . . . . 0.7 pf Plate Dissipation . . . . . 14 watts Screen Dissipation. . . . . 2.2 watts Maximum Plate Voltage . . . 350 volts Maximum Screen Voltage. . . 315 volts |
Typical Operation as a Receiving Tube Description Ep Eg EgMax Es Is IsMax Ip IpMax Rp TC AF Zl PO ------------------------------------------------------------------------- Class A Amp 60 0 - 250 22.0 - 100 - - - - - - Class A Amp 250 -12.5 12.5 250 4.5 7 45 47 50K 4100 - 5K 4.5 |