My OPAMP original or copy?

[winter0316]

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

good evening

I am a Korean

This is OPA627BP(China), OPA637BP(USA Nevada Reno )[ARROW.com]

OPA637BP $26.36

OPA627BP 40元 → $6.20

I would like to Authenticity Test

Please let us know how

winter0316 ??? ? ?? ? ??? ← My blog

 

[prairiemystic]

Here is a picture of OPA627AP from Digikey.
They run quite warm compared to plain op-amps. They are laser-trimmed so you might have ones that did not meet specification.
Otherwise, I am not sure why they are so cheaply priced from China.

 

[winter0316]

Thank

Thanks

An externally hosted image should be here but it was not working when we last tested it.

Texas Instruments Burr brown
manufactory ━▶ Thailand

An externally hosted image should be here but it was not working when we last tested it.

Burr brown Burr brown
manufactory ━▶ ????? TAIWAN ??

 

[mirlo]

Usually, the place of manufacture printed on IC packages is where the die was packaged, ie the package mfr, not the semiconductor manufacturer.

 

[umut1001]

Surplus items may be sold much cheaper than the regular products,so they become cheaper.I think an opamp does not age by years,can be used as new after ten years so can be bought much cheaper.

 

[wintermute]

Hi winter0316 try uploading the pictures as attachments 🙂

here are a few of the images in the original post.

Tony.