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845-TII is direct-heated type thorium tungsten cathode triode, class A1 and AB1
Heater
Uf---------------------------------------10 V
If----------------------------------------3.25 A
Maximum Rating
Ua----------------------------------1250 V
Pa-------------------------------75 W
Pout(max.sig)--------------------------150 W
Ia(max)------------------------------120 mA;

Direct Interelectrode Capacitances

input----------------------------------6 PF
output----------------------------------4.5 PF
grid to plate----------------------------------14.5 PF

Static parameter
Ua--------------------------------------1250 V
—Ug-------------------------------------200 V
Ia---------------------------------------80 mA
Gm--------------------------------------3 mA/V
ri----------------------------------------1.7 KΩ
u----------------------------------------5
RL---------------------------------------3.4 KΩ
Ug(pk)------------------------------------69 V
Pout-------------------------------------15 W