Heater
Uf-----------------6.3 V 12.6  V
If-------------------0.30 0.15 A

Direct Interelectrode Capacitances
                           No.1   No.2
input----------1.6     1.6 PF
output----------0.46   0.34 PF
grid to plate----------1.7     1.7 PF

 Static parameter
Ua--------------100 250 V
—Ug-------------1 2 V
Ia---------------0.5 1.2 mA
Gm--------------1.25 1.6 mA/V
u----------------100 100
ri----------------80 62.5 KΩ
class A1.maximum.single triode.
Ua----------------330 V
-Ug--------------—50 V
+Ug-------------- 0 V
Pa-------------1.2 W
Uh-k(pk)--------±180 V