Possibly counterfeit CSD18504 and CSD17559.

Eldes

Hello, everyone.

We've ordered the manufacturing of small batch of electronic devices with power MOSFETs CSD18504 and CSD17559. When we were testing, a number of malfunctions have occurred. Searching for a cause of malfunctions, we became suspicious of installed MOSFETs mentioned above. They differ from TI MOSFETs we tested before, both in package and marking. They don't have TI logo, and one of them have some other unknown logo.

Please give your opinion on whether the parts on photos below are original TI parts, counterfeit parts or something else.

over 11 years ago

0 Brett Barr1 over 11 years ago

TI__Mastermind 18200 points

Verification of part authentication must be worked through your supply chain due to uncertainties regarding chain of custody of the products. Please be aware that the quality of the parts might be suspect if not received directly from TI or a TI authorized distributor. This can be due to decreased floor life (devices out of the moisture barrier bag), pre-usage of the parts, wrong storage procedures, mishandling, etc. TI strongly encourages you to purchase all your TI parts either directly from TI or from authorized TI distributors (http://focus.ti.com/docs/general/distribcountryresults.jhtml) and not from the gray market or brokers.

0 Eldes over 11 years ago in reply to Brett Barr1

Prodigy 130 points

Thank you, Brett. May you give any specific information, based on the photos I posted? I think in this case package marking may be a primary factor of authentication.

0 Brett Barr1 over 11 years ago in reply to Eldes

TI__Mastermind 18200 points

I recommend contacting TI's counterfeit team directly at ti-counterfeit@list.ti.com .

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Possibly counterfeit CSD18504 and CSD17559.