Volume Volume and Volume usually dictate SMT VS TH.
If you volume is great enough than SMT is the way to go even if you need to
Loose load a couple of components at hand assembly.  I am not sure which
tech bulletin or procedure would point you in this direction, but that is
how business is done here at Tyco.
Regards
Marie

-----Original Message-----
From: Tempea, Ioan [mailto:[log in to unmask]]
Sent: Friday, May 23, 2003 12:34 PM
To: [log in to unmask]
Subject: [TN] Through-hole design vs. SMT design


Hi Technos,

I have a dilemma on my hands. An assembly that has about 15 passives (caps
and resistors), a connector and a fuse holder. The connector must be TH and
probably so does the fuse holder. The designers came with the question: "for
lower manufacturing costs should we design the board 100% TH, or make the
passives SMT and keep the other 2 parts TH". Interesting...

And here come my questions:

*       what are the technical criteria that you use when trying to solve
this kind of riddle?
*       what are the economical criteria?
*       what parameters could I use for a breakeven analysis?

Thank you,
Ioan

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