Amazon CA3240EZ Op-Amp

[Huntress]

The part that will bother you is not knowing what chips you're buying.

The ones from Amazon will work, but you'll never know if they're a relabeled 4560d, a relabeled LM258, a relabeled TL052, a relabeled TL082, etc. etc. etc. It gives you no point of comparison.

If you're OK with a different chip, get a TL072 and you'll know what you’re starting with.
But if you want it to be a genuine Intersil, you have to get it from Mouser, Digikey, or Newark.

Thanks!!

 

[Chuck D. Bones]

Arrow is also an authorized distributor for most manufacturers.

 

[music6000]

Readily available for me, 10 minutes by car in AU prices!

 

[Huntress]

Readily available for me, 10 minutes by car in AU prices!

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I live in Regina Saskatchewan, where we used to have an electronics component place that you could walk in and buy any component you needed. But unfortunately it is no longer, which sucks thanks to online shopping.

 

[Zave2023]

If you are buying semiconductors on eBay or Amazon, you must be able to test them. Otherwise, you will wind up with Fugazi parts. Too many sellers on Amazon & eBay know less than you do about the stuff they're selling. Hanlon's Razor notwithstanding, there are probably some unscrupulous sellers who deliberately sell crap too.

Something else to think about: CMOS parts are very susceptible to ESD (static electricity) damage. If the seller or their supplier do not handle and package the parts correctly, you could end up with wounded parts. I returned a microprocessor on eBay because it was not packaged properly. The seller apologized and admitted that they had no clue how to properly handle CMOS.

You are right, all the sellers of electronic components know little about their products, why? Because they sell products in hundreds of thousands, they are distributors, not manufacturers.
How do I know? Because I also run a website that sells electronic components.