Quantity in Stock
14
Location
Box E.1
Mullard describe the E810F as a special quality high slope pentode designed for use in industrial equipment where stability of characteristics and long life are required.
It is a wideband RF device, but no frequency range is given.
From the information available it appears that 40 – 100 MHz is a probable upper value.
Oscilloscope amplifiers and other measuring instruments are likely candidates for this valve.
We believe that this valve dates from the 1960s.
Pin 1: Cathode
Pin 2: Grid Number 1
Pin 3: Cathode
Pin 4: Heater
Pin 5: Heater
Pin 6: Grid Number 2
Pin 7: Anode
Pin 8: Grid Number 3, Internal Shield
Pin 9: Grid Number 2
Specifications
Vf : 6.3v
If : 340mA
Va : 120v
Vs : 150v
Vg : -1.9v
mAa : 35 mA
Ra : 42kΩ
gm : 50
Vg2max : 165v
Cga : 3.6pF
Substitutes
7788
CV5809
Datasheets
Thanks to the Valve Museum for the information collected here.