In a message dated 2/13/2001 5:17:24 PM Central Standard Time,
[log in to unmask] writes:
<< Can anyone give me directions to finding good info regarding cost
reductions in transitioning from PTH to SMT. Any help is greatly appreciated.
Thanks. >>
Hi Jason!
This is a "loaded" question. In a global sense, you have to ask, why is it
that you want to go from PTH to SMT? There has to be a solid reason for this,
the reasons could be:
1. Size reductions...the assemblies need to be smaller.
2. Circuit speeds...they need to be faster.
3. Component availability...PTH components aren't available anymore.
Unless any of the above are true, then there is no reason to convert from PTH
to SMT.
Each assembly needs to be reviewed thoroughly on a case-by-case basis ( a lot
of work, I know!) to see if there really is a reason to convert the assembly.
I know that some will just look at things as "parts are parts, and the SMT
equipment can spit out 20,000 parts per hour, while the PTH equipment only
does 5000 parts per hour...", there's much more in the equation than that...
Especially in the recent market situation with SMT components, it's a
'friggen jungle out there!!! You've got distributors out-and-out lying to you
about delivery times on many SMT components...you place a PO with them, get
promised a delivery date, and as the date rolls around, they call you and
push it out another month or two...I know of what I speak, but I won't name
names...maybe the "Big Guys" like SCI don't have as much of a problem...but I
think you guys are feeling the same pain as us "little guys".. ...it's bad
out there trying to buy parts!!!
So you convert something from PTH to SMT, only to find you can't get the
parts, peachy huh?
To me, at this time, you really have to asses why you want to convert the
assembly. If you've been getting parts okay, and there's no push to shrink
things, or speed them up, you'll be better off cost-wise to leave things as
they are...
Not good news, but reality...
-Steve Gregory-
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