TubePad 6.0 Tube Chart

Quick Reference Data

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