[sdiy] "obsolete" 2N3906

[Paul Maddox]

Grant,

> What makes you say that? What are you implying? What are you trying to get
> at? Who are your working for? Did my ex send you??????

I cant say, if I did I'd have to kill you... ;-)

> Within my lifetime we have seen the steady evolution towards using less
raw
> material to product the same electronic results. From tube to discrete
> transistor to integrated circuits and now everything with more miniaturize
> packaging. Hopefully, this economic force is working in a "green"
direction
> and reducing wasted resources and ecological impact.

agreed, if the industry uses less plastic/metal/silicon and less PCB
material, less etchant and so on, its got to be good.

> The Wiard 1200 series is being engineered all in surface mount parts. It
> looks like, by using heat resistant adhesive, I can "wave solder" a 2" x
2"
> board in a small solder pot. If I can get it to work, this will be a huge
> productivity increase. The elimination of lead preparation and lead
cutting
> is a huge savings also.

good stuff!

> I am a home surface mount enthusiast, and now do all my prototyping with
> surface mount on surf boards and copper clad for a ground plane. I
estimate
> it takes about half the time needed for a through hole prototype.

Agreed, none of that drilling!!!
Though soldering a 208pin TQFP was NOT fun ! (Xilinx SpartanII 300Kgate
device)
other than that I've done upto 144 pin TQFP and single resistors/caps
without any problems.

Paul
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