JJ Electronic EF806S Vacuum Tubes

PENTODE
EF806S is a substitution for the EF86. It is a 9-pin pentode often used in microphones and in some amplifier designs can also be used on pre-amplifying stages.

Base: NOVAL
Uf = 6,3 V
If = 200 mA

Typical characteristic:
Ua = 250 V
Ug3 = 0 V
Ug2 = 140 V
Ug1 = -2,2 V
Ia = 3,0 mA
Ig2 = 0,6 mA
S = 2,2 mA/V
μg2/g1 = 38
Ri = 2,5 MΩ