Tube of the day (24.10.2018)
UAA 91
duodiode
Heater : indirect; Uf = 19V; If = 0.1A;Ufk = 350V
Maximum Ratings : Ua =-420V;Ia = 9mA;Ias = 54mA
Measured Data: Ua = 2.5V;Ia = 9mA;
applications : twin diode with seperated cathodes for signalrectifier and demodulators in serial heated devices
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 2  a      
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  B7G pin connections