Fake tl072?

[Vild]

These have to be fakes right? Really good price if not

BOJACK TL072 072 Low Noise JFET Dual DIP8 Delay Op Amps Operational Amplifiers IC Chip (Pack of 20): Amazon.com: Industrial & Scientific

BOJACK TL072 072 Low Noise JFET Dual DIP8 Delay Op Amps Operational Amplifiers IC Chip (Pack of 20): Amazon.com: Industrial & Scientific

www.amazon.com

 

[Big Monk]

At that price, yes.

 

[jessenator]

This should be sticky'd at this point

Thread 'TL072 vs "TL072"'

Aug 4, 2022

I did not want to hijack the "TL072 substitute? (They're expensive now)" thread, hence a separate topic.

Short visual and audio comparison between fake and genuine TL072 chips.

Simple setup, one inverting stage.

Genuine vs fake



and LM358 for a comparison.



Here some oscilloscope images from a working circuit.








And simple audio comparison. There are 6 sounds in the file. 1-3-5 fake chip, 2-4-6 geniune.
In my opinion, the difference is best heard in the...

• temol
• Replies: 53
• Forum: General Questions

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[jessenator]

Although I will say that fake TI logo looks better than the dragon chicken I had on mine

 

[Cybercow]

These have to be fakes right? Really good price if not

BOJACK TL072 072 Low Noise JFET Dual DIP8 Delay Op Amps Operational Amplifiers IC Chip (Pack of 20): Amazon.com: Industrial & Scientific

BOJACK TL072 072 Low Noise JFET Dual DIP8 Delay Op Amps Operational Amplifiers IC Chip (Pack of 20): Amazon.com: Industrial & Scientific

www.amazon.com

Over the past decade I've been tracking bad opamp runs. There are a few date codes stamped on TL072CP chips where the entire run is out of spec . . . . .

Known Bad TL072CP Date Codes:
18MDSHY
14AP8NM
07A5L8QM
22ALE3M

The date code o the chips in your link show the very first one - "18MDSHY".

 

[Fama]

I bought TI TL072's from LCSC (which I believe is trustworthy for stuff like this) for 23 eurocents a piece. Seems like the price has gone up a bit since then, but still... Only downside is you have to buy 50+ to get that price, but I consider it a lifetime supply for 12€, and the price isn't too bad even for a smaller quantity https://www.lcsc.com/product-detail/C7236.html