Originally Posted by Mike Lee

Hi Group,
After many years I have dug out my soldering iron and looking at an old
RF preselector diagram.
The main is a 40673 dual gate mosfet transistor.
I have tried Maplin and google but to no avail.
Is there an equivalent to this 40673?

I have also got an unused MPF102 but I would rather use the 40673 if it
is at all possible.

TIA,

Mike....
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Originally Posted by ionfield

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Walford electronics are offering the MEF201 as similar to the 40673, the obsolete BF981 is probably electrically similar (look in older VHF TV tuners) or the BF991 if you don't mind fiddling about soldering wires to a SMD part.