Name: 6U8 Use: Miniature tube type used as combined oscillator and mixer tube in color and black-and-white television receivers utilizing an intermediate frequency in the order of 40 MHz. There were some slight parametric differences between this and the 6U8A, therefore this tube has been listed separately, however similar. Notes: Requires a miniature 9-pin socket. |
6U8 Medium-Mu Triode - Sharp-Cutoff Pentode Characteristics Data Source. . . . . . . . . TungSol Heater or Filament Voltage . 6.3 volts Heater or Filament Current . 0.45 amperes EIA Base . . . . . . . . . . 9AE Substitutes. . . . . . . . . None |
Capacitances and Design Maximum Values: Section. . . . . . . . . . Pentode C/in. . . . . . . . . . . . 5 pf C/out . . . . . . . . . . . 2.6 pf C/gp. . . . . . . . . . . . 0.01 pf Plate Dissipation . . . . . 2.8 watts Maximum Plate Voltage . . . 300 volts Section . . . . . . . . . Triode C/in. . . . . . . . . . . . 2.5 pf C/out . . . . . . . . . . . 0.4 pf C/gp. . . . . . . . . . . . 1.8 pf Plate Dissipation . . . . . 2.7 watts Screen Dissipation. . . . . 0.5 watts Maximum Plate Voltage . . . 300 volts Maximum Screen Voltage. . . 300 volts |
Typical Operation as a Receiving Tube Description Ep Eg EgMax Es Is IsMax Ip IpMax Rp TC AF Zl PO ------------------------------------------------------------------------ Triode Class A Amp 150 56* - - - - 18 - 5K 8500 40 - - Pentode Class A Amp 250 68* - 110 3.5 - 10 - 400K 5200 - - - * = Value of cathode bias resistor |