🚀 go-pugleaf

On Fri, 24 Jul 2009 17:50:51 GMT, Sergey Kubushin <ksi@koi8.net> wrote:

>In sci.electronics.design Archimedes' Lever <OneBigLever@infiniteseries.org> wrote:
>> On Fri, 24 Jul 2009 13:06:12 +1000, "David L. Jones" <altzone@gmail.com>
>> wrote:
>> 
>>>Archimedes' Lever wrote:
>>>> On Thu, 23 Jul 2009 10:58:49 -0400, "Michael A. Terrell"
>>>> <mike.terrell@earthlink.net> wrote:
>>>>
>>>>>   Most of what we used were marked with a two character code.  The
>>>>> cheaper suppliers were unmarked.
>>>>
>>>>  Wrong again.  Markings fell out of vogue as part size decreased to
>>>> the point where it was labor intensive to even examine the marking.
>>>
>>>Why do resistors of the same size still commonly have the markings then?
>>>It's not about the size, we are talking 1206/0805 and other large sizes 
>>>here.
>>>Markings on these size caps are not common (some would say rare), and it's 
>>>*always* been that way.
>>>The question is why?...
>>>
>>>Dave.
>> 
>>   It maybe has "always been that way" with el cheapo brands, but I used
>> to do pre-reflow inspection (post pick and place), and have loaded the
>> cassettes into the picker placer, and have loaded the reels into the
>> cassettes and have programmed the PCB into it... yada yada yada...
>> 
>>   I have seen a lot of caps that were marked, so you are either using
>> cheap parts and always have, or your "always has" only amounts to a year
>> or two, since they now seldom do it.
>
>Can you poin us at not-so-cheap marked SMD capacitors so I would always use
>those in my projects? I don't care if they twice the price of those unmarked
>cheap ones...

Well, looking at some bog-standard 0805 0.1 uF 16V ceramic caps
available from Digikey, only Kemet mentions even optional marking (as E
noted above). No mention at all, that I saw, in the datasheets for
Panasonic or Murata or Yageo or Johanson. Must be that those are all "el
cheapo" brands, I suppose.

-- 
Rich Webb     Norfolk, VA