Alternative OPA134 manufacturer or a fake chip?

[Dxvideo]

Hi all,

Last month I had some purchases from www.futurlec.com
They sent the goods very quickly. And until that order I bought many components from this supplier. In this order there were four OPA134 ICs.
Anyway, the matter is; I suspicied that OPA134 s dont look like the original Burr Brown... Do you know is there any other factory that macufactures OPA134? Or my OPA134s are fake?

Thx..

[BWRX]

The screen printing on all the OPA2134s I've seen doesn't look like that...

[CJ900RR]

Its probably a fake IC. We get ton's of faked BurrBrown's IC's at work. I would say that 75% of them are other circuts that has been reprinted with a BB-print instead.

Its pretty eays to see if it fake. The reprint is often porly done, the round "hole" marking leg one is often not so deep as original IC's. If you have several IC's then check underneath if they have different marking there compared to a original one.

[Nordic]

it is fake.. real one uses solid white ink... BB logo is wider and a fat font, it stretches from halfway oer the O and streches to half way over the second A in OPA134PA. Ie the logo should be centered.

[Dxvideo]

Thanks...
These informations relieved me!

[djk]

The thought of all the money they will make to re-mark TL071s is just too great for many suppliers.

[paulb]

TI bought Burr-Brown quite a while ago and I doubt that new parts would have a BB logo. I'm sure my 2134s are marked TI.
You should tell Futurlec.

[theAnonymous1]

Originally posted by paulb
TI bought Burr-Brown quite a while ago and I doubt that new parts would have a BB logo. I'm sure my 2134s are marked TI.
You should tell Futurlec.

They are definitely still marked BB.

Pics of the top and bottom of an OPA134PA. This chip came directly from TI.

EDIT: I also have TL072 from TI and the indent on the chip is flat, not concave like the OPA. The bottom of the TL072 says "MEXICO", not "THAILAND". It's hard to tell from your pic, but the indent looks flat. What does it say on the back?

I just checked my other BB chips from TI and BB logo size varies with the different models. OPA551 and OPA134PA have the small logo, OPA552 and OPA2134PA have the large stretched logo. The OPA552 is the only chip I have with white lettering.

[BWRX]

Anonymous1's pictures show the same screen printing. A quick google search also shows similar screen printing for the OPA134. I guess they are real then. I know the printing on the OPA2134 looks different, even though it is just the dual version of the 134. Interesting.

[Dxvideo]

Thats interesting. It looks like VERY fake. However you say its not! Underside of IC there is Thailand stamp like yours.
Now I am really relieved.
Thx again.