- Sep 26, 2008
On page twelve I linked a way to test for fake opa627/637's. And yes the majority of them from unauthorized dealers are fakes, there is no reason to buy opa627/637 from them. Because if they cost 80% off retail they obviously did not come from the manufacturer, and if they cost close to retail price it could easily be a scam to make you think it is legitimate (very likely on ebay). Don't take the chance and just buy it from digikey or newark or another authorized dealer.