Tube of the day (19.11.2017)
UBL 3
duodiode, powerpentode
Heater : indirect; Uf = 55V; If = 0.1A
Maximum Ratings : Ik = 75mA
Dioden: Ud = 200V;Id = 0.8A
Pentode: Ua = 250V;Pa = 11W;Ug2 = 250V;Pg2 = 2.5W
typical Characteristics : Pentode AF A-Amplifier
Ua = 200V;Ug2 = 200V;Ug1 =-13V;Ia = 45mA;Ig2 = 6mA
S = 7.5mA/V;No = 4W
applications : diodes for signalrectifier and demodulators, pentode for af-powerstages in serial heated devices
 1  a  9  g1   
 2  g2      
 3  d      
 4  d'      
 5  k,g3      
 6  f      
 7  f      
 8  -      
  P5 pin connections