[sdiy] SMT?

harry harrybissell at prodigy.net
Thu Apr 5 22:44:29 CEST 2001


Agree: Ah the glorious headroom of Bipolar 15 volt supplies.  Personally I don't
even prefer +/- 12V... too wimpy.

H^) harry

Magnus Danielson wrote:

> From: harry <harrybissell at prodigy.net>
> Subject: Re: [sdiy] SMT?
> Date: Thu, 05 Apr 2001 13:44:16 -0500
>
> > Naysayers say:
> >
> > 1) difficult to handle the parts by hand
> > 2) parts difficult to identify (caps often unmarked... try back-annotating
> > THAT!)
> > 3) no HOLES ??? do you use SMT jumpers ???
>
> Hey! There are SMT mountable IDC contacts with 2.54 mm
> separation. They can make you crazy!! You MUST measure them for
> connectivity and you must handle them with extreme care and few cycles!!!
>
> > 4) price (a lot of SMT parts are actually MORE expensive than the through hole)
> > 5) hard to hand solder
> > 6) hacks and whacks much harder
> > 7) hard to probe...
> > 8) magnifying glass or microscope required.
>
> 9) SMT handles mechanical stress extremely badly. SMT-only mounted
>    contacts is just braindamaged most of the time.
>
> SMT has it's benefits, but some people that ought to know better try
> to do EVERYTHING SMT, and that stuff is ugly and fails greatly.
> The same clueless people beleive anything not running at 3.3V or lower
> as just stupid old stuff... that it actually works better is not even
> in their scope of understanding.
>
> Sigh!
>
> Sigh!
>
> Cheers,
> Magnus




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