IC'er falske eller ægte ?

Hej

Findes der internetsider som man kan bruge til at fastslå om IC'er og/eller transistorer er falske eller ægte ?

Med falsk menes, at hvis en IC bliver solgt på f.eks. eBay hvor den er opgivet til at være ægte, men i virkeligheden kommer fra Kina.
F.eks. om man kan se det på benene eller på teksten osv....

Min særlige interesse i dette er hvis man er i den situation, at det er en IC eller transistor der er udgået fra produktion og de gængse og pålidelige forhandlere ikke længere har det på lager og man er nødsaget til at finde det på f.eks. eBay.

Det er jo ikke sjovt hvis en IC i virkeligheden kommer fra Kina og så snart man monterer den i printet, så stikker dens egenskaber muligvis af i alle retninger.

Mvh Henrik

Svar til #1:

Kort svar: Nej

Lille men gammel liste:

Counterfeit Semiconductors:
https://web.archive.org/web/20160822215134/sound .westhost.com/counterfeit.htm
Citat: "...
So is the problem a bad design? Very probably not. Counterfeit power transistors are not only available (again!), they are rife in the industry. Don't bother re-reading that - you saw it correctly. Counterfeit power transistors !!
..."

Jun. 16, 2012, Counterfeit Chinese Microchips Are Getting So Good They Can't Be Identified:
http://www.businessinsider.com/counterfeit-part s-from-china-raise-grave-concerns-for-bo th-us-companies-and-national-security-20 12-6
Citat: "...
Then they "undersell the genuine manufacturers by very substantial amounts" to create a market force for their fake products.
...
Feuchtbaum notes that "China is a huge source for electronic counterfeit, and they don't have very strong enforcement mechanisms" because prosecutions are controlled at the local level where government corruption is rampant.
..."

Oct 1, 2014, DARPA technology uncovers counterfeit microchips.
DARPA partners are developing technologies and software that can certify circuits:
http://www.networkworld.com/article/2690353/sec urity0/darpa-technology-uncovers-counter feit-microchips.html

31 Jan 2016, Chip company FTDI accused of bricking counterfeits again.
RS-232 is still enough of a thing there are people who turn a quid ripping off chipsets:
http://www.theregister.co.uk/2016/01/31/ftdi_ac cused_of_bricking_counterfeits_again/
Citat: "...
Instead of bricking the target, the posters reckon what's happening now is even worse: “Sending random characters on the RS232 interface may cause really bad things to existing products and the buyer often had no chance to know that he bought a fake chip”, writes user RFZ, who first noticed strange things happening.
..."

04.10.2018, Bericht: Winzige Chips spionierten in Cloud-Servern von Apple und Amazon.
Seit mindestens 2015 weiß die US-Regierung von chinesischen Spionage-Chips auf Mainboards, die in vielen Cloud-Servern stecken, heißt es in einem Medienbericht.
https://www.heise.de/security/meldung/Bericht-Wi nzige-Chips-spionierten-in-Cloud-Servern -von-Apple-und-Amazon-4181461.html
Citat: "...
Im Rahmen des Open Compute Project (OCP) gibt es mehrere Initiativen, die auf die Härtung von Servern gegen manipulierte Firmware zielen. Google (Titan/H1) und Microsoft (Cerberus) entwickeln eigene Sicherheitschips, die unter anderem kryptografische Signaturen von BIOS und BMC-Firmware prüfen. Das Projekt Open System Firmware (OSF) bemüht sich um offengelegte BIOS-Alternativen und bei OpenBMC geht es um offene Firmware für BMC-Chips wie die verbreiteten Aspeed AST2400/AS2500. Das US-Militär wiederum versucht seit Jahren, den Schutz vor gefälschten Chips (Counterfeit Parts) zu verstärken.
..."

April 22, 2019, How greed and corruption blew up South Korea’s nuclear industry.
Seoul had a solution to the world’s energy problems. Then everything went wrong.
https://www.technologyreview.com/s/613325/how-gr eed-and-corruption-blew-up-south-koreas- nuclear-industry/
Citat: "...
On September 21, 2012, officials at KHNP had received an outside tip about illegal activity among the company’s parts suppliers. By the time President Park had taken office, an internal probe had become a full-blown criminal investigation. Prosecutors discovered that thousands of counterfeit parts had made their way into nuclear reactors across the country, backed up with forged safety documents. KHNP insisted the reactors were still safe, but the question remained: was corner-cutting the real reason they were so cheap?
..."

Svar til #1:

https://dk7ih.de/fake-components-and-how-to-reco gnize-them/


Jeg købte for et par år siden to stk. hybrid IC'er af typen STK..... til B&O stereoanlæg, hos et firma i Irland og sammenlignede dem på den trykte tekst.
De så umiddelbart ens ud i størrelsen + den hvide farve, men den ene IC var en smule skæv i stemplingen og det kan ikke forekomme på normal vis i en fabrik, hvor der kører mange tusinde på et samlebånd - den ene kan meget vel være en - Fake...

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