OPA627 identification problem

[L700]

i found another type of wording of 627

[jitter]

I'd like to add something to this thread.

The company I work for has twice now come across a batch of counterfeit OPA627.
The fakes may be so good that that their shortcomings might only become apparent in critical applications.

If you have a number of the OPA627 of the same batch code, you might also want to check the bottom of the IC.
I remember that one of the fake batches had very convincing printing on the top, and despite the fact that they all carried the same batchcode, the small circle cast in the bottom side of the IC displayed several different countries of origin!
TI/BB confirmed that the batchcode on the fake batch was not theirs.

[SweatyMe]

That's my first post so hello everyone!

I can buy 627's, and my question is how do they look in your opinion? Are they authentic or fakes?

Regards!

[jitter]

Unfortunately looks alone will not reliably inform you if the components are genuine or counterfeit.

I work for an electronics company that assembles and tests electronics for a wide range of industrial customers, hence I get to see lots and lots of components. I can tell you that different batches of the same type and brand of IC can look quite different from eachother while still being the real thing. I will also tell you that some counterfeit products may look conspicuously different but others may look the same or even better than a genuine product! Genuine products also vary a lot, BTW!

Analog Devices doesn't really seem to adhere to uniformity across their range. I've seen the AD797 and AD829 (both conventional and SMD) change from the nice picture in their datasheet to a simple text printing without even the company logo on it! And yes, they're genuine.

I remember coming across a batch of the OPA627AM that looked fake (which it was) and a batch of the OPA627BP that looked real (which it wasn't). I've also seen batches of the OPA627BP that looked fake (careless printing) but were genuine.
Just like AD, BB also doesn't strictly adhere to uniformity. Compare the printing on an OPA350 with that of a recent OPA627 (the ones where the encircled R has been omitted), and you'll notice they look quite different.

The only way to be sure to get the real thing is to buy directly from an authorized dealer and definitely avoid brokers and other unconfirmed sources.