What is the difference of the Rev. on the reel label ?
I have Rev. B, C ,D on my hand..
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There are multiple spots on these three labels that seem odd to me. One possibility is mis-labeling of course.
Could you please show the lot #? It helps to verify if they are legitimate. If yes, we need to track down the labeling issue.
There isn’t a Rev “D”, which I know for sure; I’m still not 100% sure if we indeed have a “C”. Secondly, “CU2” is not a valid fab code, and there is no such fab in Japan. The fab info is very suspicious.
Like I mentioned, this info alone may not be sufficient to say if the parts are genuine. Although rare, mislabeling can happen. The lot number and the ship track code are another tool we can use to validate the material. Both of these codes are blocked in your picture.
The chip images look to be right.
The fab code and AT code are both OK, previously I was looking at an incomplete list.
The lot number itself is correct and exists in our system. All this info points to the fact that the material is more likely legitimate than not.
There is a rev C, which is the same silicon as rev B. C was created to accommodate a die coating process, which alleviates stress in certain packages.
There is not a rev D. However I’ll always be more than happy to look up a lot if you send me the complete lot information. Paper verification doesn’t guarantee 100% confidence, but it does bring us one step closer to truth.