TubePad 6.0 Tube Chart

Quick Reference Data

Name: 6X8
Use:
Miniature tube type used as combined oscillator and mixer tube in television receivers utilizing an IF in the order of 40 MHz.
Notes: Requires a miniature 9-pin socket.


6X8
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 . . . . . . . . . . 9AK
Substitutes. . . . . . . . . None



Capacitances and Design Maximum Values:

Section . . . . . . . . . .      Pentode
C/in. . . . . . . . . . . .      4.3 pf
C/out . . . . . . . . . . .      0.7 pf
C/gp. . . . . . . . . . . .     0.09 pf
Plate Dissipation . . . . .      2.0 watts
Screen Dissipation. . . . .      0.4 watts
Maximum Plate Voltage . . .      250 volts
Maximum Screen Voltage. . .      250 volts

Section . . . . . . . . . .       Triode
C/in. . . . . . . . . . . .      2.6 pf
C/out . . . . . . . . . . .      0.5 pf
C/gp. . . . . . . . . . . .      1.4 pf
Plate Dissipation . . . . .      1.5 watts
Maximum Plate Voltage . . .      250 volts





Typical Operation as a Receiving Tube                   

Description          Vp  Vg VgMax  Vs  Is IsMax  Ip IpMax   Rp TC AF Zl PO
==========================================================================
Triode Class  A Amp 100 100*    -   -   -     - 8.5     - 6.9K  - 40  -  -
Pentode Class A Amp 250 200*    - 150 1.6     - 7.7     - 750K  -  -  -  -
* = Value of cathode bias resistor