[TriEmbed] When not to use Chinese knockoffs...

[Scott Hall]

My professional guess is that the no-name parts are the rejects or
out-of-spec parts from the primary brands' production lines.  So that
wouldn't make them "knockoffs" so much as "rejects".  There is no way to
tell if you are getting a reject part because it has probably gone through
the production labeling and packaging process anyway.

Where I used to work, they had to test every inbound part, and if not
practical (tape reel, etc) test every soldered board to find the "radical"
parts before assembly.  This makes for very inefficient production testing
and drives the COGS up.

Just for information, you can expect about 4-5% defect rate from a good
supply of parts.  When you start seeing 25-50% defects you know you've been
ripped off.

- sgh

On Tue, May 2, 2017 at 1:16 PM, Scott Hall <scottghall1 at gmail.com> wrote:

> 🤔
>
> On Tue, May 2, 2017 at 12:01 PM, Jeffrey Crews <cruzetti at gmail.com> wrote:
>
>> So where are all the good, non-knockoff components manufactured?
>>
>> On Tue, May 2, 2017 at 11:54 AM, Mauricio Tavares via TriEmbed <
>> triembed at triembed.org> wrote:
>>
>>> My favourite picture is the fake capacitor.
>>>
>>> On Tue, May 2, 2017 at 11:49 AM, Scott Hall via TriEmbed <
>>> triembed at triembed.org> wrote:
>>>
>>>> Cheap electrolytic capacitor..
>>>>
>>>> ATMEGA1288 from Arduino Mega clone...
>>>>
>>>> A really slow-blow fuse...
>>>>
>>>> Battery regulator
>>>>
>>>> --
>>>> Scott G. Hall
>>>> Raleigh, NC, USA
>>>> scottghall1 at gmail.com
>>>>
>>>> _______________________________________________
>>>> Triangle, NC Embedded Computing mailing list
>>>> TriEmbed at triembed.org
>>>> http://mail.triembed.org/mailman/listinfo/triembed_triembed.org
>>>> TriEmbed web site: http://TriEmbed.org
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Triangle, NC Embedded Computing mailing list
>>> TriEmbed at triembed.org
>>> http://mail.triembed.org/mailman/listinfo/triembed_triembed.org
>>> TriEmbed web site: http://TriEmbed.org
>>>
>>>
>>
>
>
> --
> Scott G. Hall
> Raleigh, NC, USA
> scottghall1 at gmail.com
>



-- 
Scott G. Hall
Raleigh, NC, USA
scottghall1 at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20170502/c3e8faed/attachment.htm>