OPA627 identification problem

bbakota2000 · 26th August 2005, 03:03 PM

Can enyone tell me is one of these OPA627AP fake? Why is the name on the right one not printed in white letters. If niether of them is fake, is there possibility they will perform different.
I got these from e-bay.

Thanks!

carlmart · 26th August 2005, 03:17 PM

Quote:

Originally posted by bbakota2000
Can enyone tell me is one of these OPA627AP fake? Why is the name on the right one not printed in white letters. If niether of them is fake, is there possibility they will perform different.
I got these from e-bay.

Both look authentic to me. Though the samples I have from BB/TI were like the one on the right.

Carlos

peranders · 26th August 2005, 03:21 PM

It may not mean anything but most B-B IC's I have, have a (R) to the right of the logo, both with printed white and laser marked. I have also a couple of IC's without (R) but all text is left justified (not in your case).

bbakota2000 · 26th August 2005, 03:29 PM

Quote:

Originally posted by peranders
It may not mean anything but most B-B IC's I have, have a (R) to the right of the logo, both with printed white and laser marked. I have also a couple of IC's without (R) but all text is left justified (not in your case).

So you think the left opamp isn't genuine?

tschrama · 26th August 2005, 05:05 PM

my opa627 opamps also vary in color and text...don't worrie

zagisrule! · 26th August 2005, 05:44 PM

On the newer BB units, the BB logo is stretched a bit and centered, printed in bright white lettering.

The left unit looks shady to me, note that the numbering on the bottom is not a consistent form with the 627's I have.

-Matt

Noak · 26th August 2005, 06:10 PM

All OPA627s that I have, AP/BP look like the one on the right.

DC Dave · 26th August 2005, 09:25 PM

I have also seen these chips on ebay and wondered if they were real or not.
I talked to TI and sent a copy of the posted pic to them to see what they had to say.
Here is a copy of their reply:

Hello David,

Thank you for contacting the Americas Product Information Center at TI.

I have researched the two parts that your provided, and it appears that that the part that has the below topside marking of

BB
OPA627AP
21ZS44W

matches our mart marking symbol for what the topside marking should appear as on the top of the OPA627AP chip. The second chip that has the part marking of

BB
OPA6727AP
0044WM8946

Does not. If you did not purchase either part from an authorized TI vendor such as Digikey, Avnet, Arrow, Newark In One, or Insight, we have no way of guaranteeing either part. But the first part does appear to have the correct nomenclature for the topside marking.

If you suspect that the parts that you have are not valid, and you did not purchase from a TI vendor, please contact the vendor from which you purchased the parts from.

I hope this information is helpful and if you have any further questions please feel free to call or reply to this email.

Thank You,

Dennis Williams

Texas Instruments
Semiconductor Technical Support
http://www-k.ext.ti.com/sc/technical...c/americas.htm

I would stay away from ebay venders of expensive opamps.

approse · 26th August 2005, 09:45 PM

I am greatful you took the time to write TI about the chips! I guess it would have been out of thequestion TI would be concerned about a trademark infringment but... at least I know my gut instinct that they were fake was right. He was selling them for half of TI's wholesale and about 30% of retail.

Can't tell ya how bad I wished that would have been the real thing. Too bad we can't tar & feather some efake sellers!

Ron

DC Dave · 26th August 2005, 10:23 PM

The only thing that can be done is to warn others here. Care to share the seller's ID?

26th August 2005, 03:21 PM	#3
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	It may not mean anything but most B-B IC's I have, have a (R) to the right of the logo, both with printed white and laser marked. I have also a couple of IC's without (R) but all text is left justified (not in your case). __________________ /Per-Anders (my first name) or P-A as my friends call me

26th August 2005, 09:45 PM	#9
approse diyAudio Member Join Date: Apr 2005 Location: Tennessee	I am greatful you took the time to write TI about the chips! I guess it would have been out of thequestion TI would be concerned about a trademark infringment but... at least I know my gut instinct that they were fake was right. He was selling them for half of TI's wholesale and about 30% of retail. Can't tell ya how bad I wished that would have been the real thing. Too bad we can't tar & feather some efake sellers! Ron __________________ R.J.

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26th August 2005, 05:05 PM	#5
tschrama diyAudio Member Join Date: Jul 2001 Location: The Netherlands	my opa627 opamps also vary in color and text...don't worrie

26th August 2005, 05:44 PM	#6
zagisrule! diyAudio Member Join Date: Apr 2004 Location: Edgewood, NM	On the newer BB units, the BB logo is stretched a bit and centered, printed in bright white lettering. The left unit looks shady to me, note that the numbering on the bottom is not a consistent form with the 627's I have. -Matt

26th August 2005, 06:10 PM	#7
Noak diyAudio Member Join Date: Jul 2005 Location: Singapore	All OPA627s that I have, AP/BP look like the one on the right.

26th August 2005, 09:25 PM	#8
DC Dave diyAudio Member Join Date: Feb 2004 Location: Washington DC	I have also seen these chips on ebay and wondered if they were real or not. I talked to TI and sent a copy of the posted pic to them to see what they had to say. Here is a copy of their reply: Hello David, Thank you for contacting the Americas Product Information Center at TI. I have researched the two parts that your provided, and it appears that that the part that has the below topside marking of BB OPA627AP 21ZS44W matches our mart marking symbol for what the topside marking should appear as on the top of the OPA627AP chip. The second chip that has the part marking of BB OPA6727AP 0044WM8946 Does not. If you did not purchase either part from an authorized TI vendor such as Digikey, Avnet, Arrow, Newark In One, or Insight, we have no way of guaranteeing either part. But the first part does appear to have the correct nomenclature for the topside marking. If you suspect that the parts that you have are not valid, and you did not purchase from a TI vendor, please contact the vendor from which you purchased the parts from. I hope this information is helpful and if you have any further questions please feel free to call or reply to this email. Thank You, Dennis Williams Texas Instruments Semiconductor Technical Support http://www-k.ext.ti.com/sc/technical...c/americas.htm I would stay away from ebay venders of expensive opamps.

26th August 2005, 10:23 PM	#10
DC Dave diyAudio Member Join Date: Feb 2004 Location: Washington DC	The only thing that can be done is to warn others here. Care to share the seller's ID?

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