Counterfeit IC?

[rezaxyz]

Posted on April 08, 2015 at 13:07

Hi all,

I�m designing a STM32F107VCT based embedded system. Unfortunately I�ve several problems with this part. For example the part wasn�t program correctly (Verification failed), and when I removed and soldered another chip, the problem solved. Since the Mouser and Digikey prices are about 2 times more expensive than I�ve bought, In your opinion is it possible my chips are fake or Counterfeit parts?

Thanks in advanced,

Reza #programming-verfication-fail

[AvaTar]

Posted on April 08, 2015 at 13:27

In your opinion is it possible my chips are fake or Counterfeit parts?

In theory, yes.For example the part wasn’t program correctly (Verification failed), and when I removed and soldered another chip, the problem solved. I'd rather suspect inproper soldering, program/debug connection issues, or power supply issues. Perhaps in this order. Missing buffer caps, unstable supply voltage and too long SWD/JTAG wires could cause similiar problems.

[rezaxyz]

Posted on April 08, 2015 at 18:54

Thanks argentum.

[Amel NASRI]

Posted on April 10, 2015 at 10:45

Hello Reza,

Generally, the probability of counterfeited products cannot be totally discarded unless you are getting your parts from a trusted supplier.So, we encourage you/your company to purchase ST products using authorized supply chains to substantially reduce the possibility of obtaining non-genuine ST products.There is a list of authorized sales representatives and distributors on ST website: http://www.st.com/stonline/contactus/contacts/index.php.You may contact your local distributor then if you are facing repeated issue with the received parts.Thanks again for choosing ST products.Best Regards,-Mayla-

[rezaxyz]

Posted on April 20, 2015 at 13:11

Thank you Mayla.