The Fu-8560/8560A is a ceramic-metal tetrode , with conduct cooling and indirect oxide coated cathode . The Maximum plate dissipation is 200 W . The intended use for the tetrode is for rf amplifiers or vibrators , audio ampli-fiers , or modulators service .
General Characteristics
Heater Voltage -----------------------------------------------------------------------------6.0 V
Heater Current ----------------------------------------------------------------------------2.6 A
Cathode-to-heater Potential (Max) -----------------------------------------------+ - 150 V
Amplification Factor (grid to screen)--------------------------------------------------5
Interelectrode Capacitances (grounded cathode)
Input----------------------------------------------------------------------------------16.5 pF
Output ---------------------------------------------------------------------------------4.6 pF
Feedback-----------------------------------------------------------------------------0.04 pF
Maximum Operating Frequence ---------------------------------------------------500 MHz
Maximum Outline Dimensions
Length ----------------------------------------------------------------------------- 62.1 mm
Diameter----------------------------------------------------------------------------41.4 mm
Net weight -----------------------------------------------------------------------------235 g
Cooling --------------------------------------------------------------------------------conduct
Recommended Beo Conductor -------------------------------------------Eimac SK-1920
Maximum Temperature (ceramic -to-metal seals and Plate core) ------------250
Recommended Socket ----------------------------------------------Eimac SK-606 series
Maximum Ratings
DC Plate Voltage ------------------------------------------------------------------------2000 V
DC Grid Voltage---------------------------------------------------------------------- -- 250 V
DC Screen Voltage -----------------------------------------------------------------------400 V
DC Plate Current ---------------------------------------------------------------------250 mA
Plate Dissipation ------------------------------------------------------------------------ 200W
Screen Dissipation -----------------------------------------------------------------------12 W
Grid Dissipation ---------------------------------------------------------------------------2 W