[sdiy] Counterfeit chips

[Tom Wiltshire]

Hello All,

I recently received the following warning from someone who I'd  
contacted trying to get hold of old CEMs:

> Please particularly be aware of a new batch of cem3374 counterfeits  
> that have just been coming out the last month.
> Also, IR3R01, IR3R05, SN76477N.
>
> The cem3374 all (so far) appear to be date '93 which should be a  
> give away and have no part number.
> The IR3R01 and IR3R05 can be distinguished because they do not have  
> a 'oval cut' shape to the face of the IC such as all of that series  
> had.
> The SN76477N can be determined by a TI symbol embossed in the right  
> corner but no standard date code.
>
> So please take care and anytime feel free to enquire on items.  I  
> spend a lot of time and have people here dedicated to finding out  
> this information for this reason.

I don't want to spread rumours, and obviously I have no other  
confirmation of this, but I'm bringing it to your attention. You  
choose how seriously you take it. It's wise to at least be aware.

T.