Triode double with low permeability for amplifying low-frequency

voltage in various amplifying circuits, as well as for operation

in phase inverters. Design - in a glass shell, miniature. Weight 14 g.

Basic parameters at Un = 12.6 V, Ua = 250 V, Uc = -2 V

Anode current 10,0mA

Slope 5,5 mA/V