Homebrew PCBs

I think you'd have more luck posting this on an electronics list. 
Perhaps:




http://groups.yahoo.com/group/Advanced_Electronics




http://groups.yahoo.com/group/Electronics_101




Steve




--- In Homebrew_PCBs@yahoogroups.com, dg140@f... wrote:


> I forget if I posted this question here.  I am redoing a PCB, and I 
must


> replace the quad 3467 and 3468 transistors array chips.  They have 
the DH


> prefix.  I am looking at replacing them with either the 2N2907 or 
the


> 2N3905 discreet transistor.  I cannot access those pesky pdf files, 
and


> off-hand I can't see the differences between the 2N2907 and


> 2N3905 transistors.  Can someone let me know what the differences 
are?


> 


> Also, I know that a 2907 quad transistor array chip exists, but is 
there


> something like this for the 2N3905?  I find a 5-transistor array, 
but not


> a quad.


> 


> Thanks,


> Charles