[sdiy] pros and cons of SMT in DIY (was: Re: New Oakley Flanger/Chorus module)

[Pete Hartman]

In the context of DIY, what exactly is this cost differential you claim?

Because I've been doing PCBs of various sorts, and my fab house doesn't
charge me differently for SMT vs through hole vs mixed for the PCBs.  It's
DIY so I really could care less if their assembly process would cost me
more.  And I would expect through hole to cost me more anyway, so if the
point is you should use through hole for structural integrity, how is the
cost the key factor?

Pete


On Tue, May 16, 2017 at 9:39 AM, cheater00 cheater00 <cheater00 at gmail.com>
wrote:

> Cost
>
> On Tue, 16 May 2017 00:16 Pete Hartman, <pete.hartman at gmail.com> wrote:
>
>> What stops you from putting through hole headers on an SMT board, if
>> that's what you mean by structural integrity?
>>
>> On Mon, May 15, 2017 at 4:19 PM, cheater00 cheater00 <cheater00 at gmail.com
>> > wrote:
>>
>>> If you want to keep the same circuit topology (traces), smd is fine. If
>>> you want new traces, smd is a world of pain, and th is perfectly fine due
>>> to structural integrity that can hold a daughter pcb.
>>>
>>> On Sun, 14 May 2017 20:08 Michael Zacherl, <sdiy-mz01 at blauwurf.info>
>>> wrote:
>>>
>>>> Hi Roman,
>>>> changed the subject ...
>>>>
>>>> On 14.May 2017, at 19:35 , Roman <modular at go2.pl> wrote:
>>>>
>>>> > I dare to disagree, SMD alows for better piggybacking IMHO. It's so
>>>> easy to piggyback any passive component, just hold it on top and heat one
>>>> side, solder from the bottom one will be enough to hold it in place, so now
>>>> you can easily do the other side both hands. That's very useful in
>>>> development, and you actually can't tell at first glance there is something
>>>> added on top.
>>>> > I've done 3-layer piggybacking in 0402 sometimes.
>>>>
>>>> I can see your point and I’m afraid I wasn’t specific enough in my
>>>> posting:
>>>> I virtually (still) have no SMDs around in my drawers, so it’s through
>>>> hole components I’m talking about. And the 1/4W resistors and film caps are
>>>> quite recognisable when glued on.
>>>> But it’s doable, mostly.
>>>>
>>>> > Dnia 13 maja 2017 21:51 Michael Zacherl <sdiy-mz01 at blauwurf.info>
>>>> napisał(a):
>>>> >
>>>> > The only thing I found harder with SMT is to modify existing designs.
>>>> Leads from through hole components better allow piggybacking parts IMHO.
>>>> But that shouldn’t be a reason not to go SMT.
>>>>
>>>> --
>>>> http://mz.klingt.org
>>>>
>>>>
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