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Jason Bowden

RC in Front of the Op-Amp: Why Did It Fail?

Jason Bowden
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TheMeasurementBlues
TheMeasurementBlues
3/28/2013 3:47:22 PM
User Rank
Teacher
Re: Soldering iron
Brad,

Someblody is teaching soldering, at least here in Boston. The local IEEE is offering a soldering course. We discussed this rather heavily in Soldering for Engineers. Some say that although soldering is never something employers look for on an engineering resume, it's a skill you should have. Others say everhting is done in simulation now.

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Brad Albing
Brad Albing
3/28/2013 3:35:06 PM
User Rank
Blogger
Re: Soldering iron
So first, they need to teach the young whipersnappers which end of the iron to hold. And then, teach them to not hold the solder in their mouth like I used to do.

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Brad Albing
Brad Albing
3/28/2013 3:29:53 PM
User Rank
Blogger
Re: Fake parts
So that would also muck up the impedance of the connector - more trouble.

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Brad Albing
Brad Albing
3/28/2013 3:27:58 PM
User Rank
Blogger
Re: Fake parts
That could turn into a serious problem - and a fire hazard.

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Brad Albing
Brad Albing
3/28/2013 3:26:49 PM
User Rank
Blogger
Re: Fake parts
Quite right - unless they are rad-hard or mil-spec parts - then they are almost certainly from the US

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eafpres1
eafpres1
2/21/2013 6:44:28 PM
User Rank
Blogger
Support for startups
@goafrit2--I agree with you; however, although today the fashion is software/internet startups with mainly youngsters with great ideas; in my career hardware startups often had very experienced people either on the team directly or on the board, and those people with 20+ years in the industry had lots of connections.  So I would say hardware startup is very different from software or services startup.  But you are right, it is hard for a small, unknown company to get a lot of support from semiconductor companies.

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goafrit2
goafrit2
2/21/2013 6:42:24 PM
User Rank
Master
Re: Fake parts
>>  Again, the buyers need to know what they are doing.  

It is possible you are writing from the perspective of a big company where you can use size to extract data from the big vendors. Vendors categorize their customers based on their purchasing power. If you do not have the financial influence, you may not a lot of feedback.

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goafrit2
goafrit2
2/21/2013 6:39:40 PM
User Rank
Master
Re: Fake parts
>>  I think in this case it is up to the buyers to ask questions and keep

Most times, that is not possible. These companies may not reply if you are not a big customer. I think a startup has no chance.

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eafpres1
eafpres1
2/14/2013 8:24:36 PM
User Rank
Blogger
Re: Fake parts
In my experience the US parent company did not condone, authorize, or organize "business models" around selling bad parts.  On the other hand, what you refer to is yet another scenario for buyers--factory generates part A out of spec; datasheet for relaxed specs for part B is created and parts go on offer.  Again, the buyers need to know what they are doing.  

Has anyone had the experience where a cross-reference service has matched a part but there were specs that didn't match, and did it affect you?

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eafpres1
eafpres1
2/14/2013 8:21:15 PM
User Rank
Blogger
Re: Fake parts
The situations I have seen in this regard are inexperienced buyers under pressure to find parts.  If a manufacturer is sorting for performance levels, they go to lengths to keep them straight.  This isn't the same as reject parts getting into the supply chain.  I think in this case it is up to the buyers to ask questions and keep their engineering engaged as well.

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Page 1 / 4   >   >>
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