Quantity in Stock
13
Location
Box E.1
Mullard describe the EF94 as an RF pentode, suggesting use up to 50 MHz.
Mullard also made the 6AU6 which the data suggests is identical.
Pin 1: Grid 1
Pin 2: Grid 3, Internal Shield
Pin 3: Heater
Pin 4: Heater
Pin 5: Anode
Pin 6: Grid 2
Pin 7: Cathode
Specifications
Vh : 6.3v
Ah (Ih): 300mA
Vs : 150v
VaMax : 300v
Vg2Max : 330v
VhkMax : 200v
PaMax : 3.5W
Pg2Max : 0.75W
Cgk : 5.5 pF
Cak : 5 pF
Cga : 3.5 pF
Substitutes
3AU6
4AU6
6AU6
6AU6A
12AU6
CV2524
CV8210
HF94
Datasheets
Thanks to the Valve Museum for the information collected here.