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Jason Bowden

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

Jason Bowden
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goafrit2
goafrit2
1/26/2013 8:19:19 PM
User Rank
Master
Re: Soldering iron
That should be a very good one. When I was in graduate school, the lab had an assistant who was doing that. It was like that has been "outsourced" and it was not that a great skill to have. Yet, if you are a designer at transistor level, soldering may be rare for you in most of these bigger firms where they have clear division of labor.

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goafrit2
goafrit2
1/26/2013 8:09:04 PM
User Rank
Master
Re: Fake parts
Yes, the components are made in Asia technically but most are outsourced plants of U.S. firms. That is different to when an Asia imitator makes a component. That TI has a plant say in China will not worry me if they run and manage it themselves. I do not think any product from that plant will turn out to be fake.

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TheMeasurementBlues
TheMeasurementBlues
1/25/2013 11:19:13 AM
User Rank
Teacher
Re: Fake parts
Jason: Counterfeit connectors are also out there. It's not just ICs, but everything. Fakes often cheat on plating and housing are often not good fits.

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TheMeasurementBlues
TheMeasurementBlues
1/25/2013 11:14:55 AM
User Rank
Teacher
Soldering iron
Do engineers know how to solder or do that just use simulations now. IEEE is giving a soldering course in Boston in early March. Soldering for Engineers tells some tales about soldering.

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JohnaIrl
JohnaIrl
1/25/2013 5:57:32 AM
User Rank
Newbie
Re: Fake parts
Jason, thanks for sharing this. I have heard so many stories about counterfeit chips. I admire your determination to get to the bottom of it. Well done!

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Jason Bowden
Jason Bowden
1/25/2013 5:42:05 AM
User Rank
Newbie
Re: Fake parts
Now I did buy alot of parts from the US, but they were not made here.

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Jason Bowden
Jason Bowden
1/25/2013 5:39:41 AM
User Rank
Newbie
Re: Fake parts
I think 80 percent of all components these days are made in Asia or CMs buy from distys or brokers or someone in Asia. I don't think many components are made in the US anymore.

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JAYARAMAN KIRUTHI VASAN
JAYARAMAN KIRUTHI VASAN
1/25/2013 5:00:54 AM
User Rank
Master
Coun'ter(ror)'feit
Hi JB,

Interesting read with an easy style.

I had several honeymoons with such fakes. In your case, you could tell a physical difference whereas I was left to feel the fake was looking more authentic than the original. Everything was same yet performance was horrible. From a simple LM358 to a complex LM2576 gave me dreadful experiences. I even had problems with PCF8574 which is a I2C I/O port expander.

 

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goafrit2
goafrit2
1/24/2013 7:46:21 PM
User Rank
Master
Put a diagram on this article
My colleague at work just read this and asked me to share that having a cartoon or a drawing would have made it more accessible to many people. Engineering concepts fly better when there are drawings.

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goafrit2
goafrit2
1/24/2013 7:23:48 PM
User Rank
Master
Re: Fake parts
>> Often the counterfeit parts don't.  At one point I recall the design group testing a batch of ICs in the temp chamber to verify they were fake.

When I was starting in the industry, I never knew the importance of supply chain experts. That job goes beyond clicking to buy, it involves solving these fake products entering a supply chain.

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<<   <   Page 3 / 4   >   >>
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