[sdiy] parts numbering

[Cynthia Webster]

on 6/26/05 1:06 PM, Roy J. Tellason at rtellason at blazenet.net wrote:

> Somebody posted in here a bit earlier abotu Tillman's pages,  and I'm looking
> around over there.  His guitar amp circuit specifies a FET with the number
> J201.  Reminds me of one I ran across in some synth or other that was a dual,
> E402?
> 
> Anyhow,  my question is,  whose numbering system is this?  Who made these
> parts,  originally?


Hi Roy!

I don't know who made them originally, but here's some info,

They've been around for a while, (Serge Tcherepnin used 'em).

NTE has a cross reference to their part number:   NTE458

Turns out that Mouser has real J201 FETs from both
Vishay/Siliconex  (781-J201),  and Fairchild (512-J210).

Best Wishes!


Cynthia 

http://www.cyndustries.com/