2N7002 Mosfet

[WGTP]

Has anyone used this instead of a 2N7000 or BS170?  Is it higher gain?

[Jered]

Hi, isn't 2N7002 surface mount?  Jered

[petemoore]

So far I've used 2N7000 with good results
 I think the two you refferred to are listed as subs on some schematics?
 I always bias those mosfets anyway.

[Jered]

Hi WG,
   Looking at the datasheet here:  http://www.fairchildsemi.com/pf/2N/2N7002.html

  It appears the 2N7002 is the surface mount equiv. of 2N7000.
  Jered

[WGTP]

I thouhgt I had seen some 2N7002's in the 92 format and was looking at a spec sheet that indicated different values for the 2N7000 and 2N7002.  I don't know enough about it to determine which characteristics relate to more or less gain.  Don't remember if it was Phillips or Fairchild.  Hmmm

I was thinking a higher gain 2N7000 might come in handy for the Blue Magic/Peppermill circuits.  

[Jay Doyle]

WG-

the 2N7002 is a surface mount 27000.

Try a BS170, it should have a good bit more gain. You are looking for transconductance, signified as gfs on datasheets. The BS170 is 320mS and the 2N7000 is 100mS. On average that is, device variation exists.

[GuitarLord5000]

How about the 7008?  Anyone have any experience with these?  A sub for the 7000 perhaps?  I've got 7000's also, but lucked out with 5 free 7008's and need something to do with them.

[Gringo]

I tried 2n7008's in the multiface from ROG, and they sounded very similar to the 7000's.

Didn't fiddle too much with them either, i was just curious to see id they would work (which they did).

[Jay Doyle]

How about the 7008?  Anyone have any experience with these?  A sub for the 7000 perhaps?  I've got 7000's also, but lucked out with 5 free 7008's and need something to do with them.

See for yourself:

http://www.supertex.com/pdf/datasheets/2N7008.pdf
http://www.supertex.com/pdf/datasheets/2N7000.pdf

[WGTP]

OK.  The Vishay's seem to have the same minimum value for forward transconductance for the 2N7000's and the BS170.  Thanks for the info.