Since the OPA627 is prone to being a counterfeit when bought through alternative channels, I was wondering if it would be helpful to you guys if I were to maintain a list of datecodes of genuine OPA627s I come across at work from now on.
After having been confronted in the past with counterfeit OPA627s, the company I work for nowadays only orders them from a reliable (authorized) supplier. That fact together with successful tests on the instruments they're used in make it fairly certain that they are the real deal.
We use the following versions:
OPA627AP (plastic DIP);
OPA627AM (TO-99 metal);
OPA627BP (plastic DIP);
Most of them will be the BP followed by the AU and occasionally the AM and AP versions.
We're talking of 1000-2000 OPA627s a year, bought in smaller batches, so we get to use quite some different datecodes. It's little effort for me to post them here, if you're interested.
Great help to my new project.