TL072 vs "TL072"

Just want to interject that 072a have been made for what,b2-3-3.5394737? decades.
The print will change with die change, at minimum. Maybe by the week...
There are IC comparison PCBs out there for those concerned. But I extremely doubt 072s from across decades or even years look consistent (unless they have a bird on them, but even then, the bird could be a legit manufactured one that was discarded for the print---buy from a legit parts warehouse.).
 
@temol Thanks so much for this. Maybe PPCB Forum should set up a directory of valid photos of all the major stompbox IC's and manufacturers? Just wondering out loud after your contribution here...

I'm still mostly in the mode of thinking ICs are always genuine at Mouser, where TL072 CP's are only $0.69/each w/ 29k in stock. They are always my first go-to place for silicon.
 
jessenator said:
... In my mind it was like if some career fraudster decided one day: "nah, not gonna counterfeit $100 bills anymore, I'm gonna do nickels from now on!"
...
Click to expand...
When you get a C-note, you inspect it — shops, gas-stations, banks — all will inspect it. In fact, some shops won't accept a hundred-buck-bill (even though their buying power through inflation is emaciated — and everyone using CCs and direct-debit etc :rolleyes:).


NOBODY expects the Spanish Inquisition, ... eh, yes, well, nobody expects to be counterfeit nickled and dimed. Flood the market with fake nickels and you can make some real money; try to pass off one fake $100 bill and you're arrested immediately.



I got a bunch of HK$500 bills (about US$70/HK$500 IIRC) withdrawing a large total-sum of money from an HSBC ATM, and with them came a 500-Quetzel or Quinient — I don't even remember, but I looked it up at the time and it was worth 57¢ to collectors because the country behind it had dumped it and started over, a few times, since the bill I received was in use.

I was a teenage werewolf, no, I was COUNTERFEIT-SWINDLED BY A BANK!!
 
Alright, the chicken logo is out, now it's…
IVRhb89.jpg


TROGDOR
 
finebyfine said:
If you’re looking to save money, I’ve been buying TL072s made by HGSemi and UTC from LCSC for personal and prototype builds and saving TI chips for commissions. Can’t recall if I’ve used one in a clean circuit though. As a longtime and frequent AliExpress chip gambler LCSC has pretty much curbed my habit.
Click to expand...
Have you done any testing on the Chinese clones ? I want to know how they perform vs an original.
 
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