Electronics > Beginners
W27C512 EEPROM Frustrations
wraper:
--- Quote from: CRCLARKE on January 05, 2020, 06:52:31 pm ---but none of shady sellers admit to being "non-reputable"
--- End quote ---
On ebay there are basically none, especially in China. If you get genuine part one time, does not mean you get a good part next. Also most of counterfeits "work"*, so most hobbyist buyers don't even have any clue they were duped.
*"work" does not mean they meet specifications or work properly in all applications they should. For example audio opamps like AD797 sell like hot cakes on ebay but barely any of them are genuine. But most buyers leave positive feedback. And even if you have genuine parts, it's really hard to compete against 50 sellers with counterfeit crap. Barely anyone wants to buy at genuine component price. And the worst part is that even if you buy at high price does not mean you'll get genuine part. Though chances are certainly much higher.
james_s:
If you get parts that are clearly counterfeit, submit an item not as described claim with ebay and get your money back. The counterfeit sellers proliferate because hardly anyone bothers to do this. Just be 100% sure so you don't falsely accuse an honest seller.
With old parts like DIP EEPROMs it can be really hard to find a legit source for genuine parts. I have no problem paying for used pulls if they're sold as such. What bothers me are all the sellers passing them off as brand new.
CRCLARKE:
I watched the video (posted above) about counterfeit components........ and it raised 2 questions to me.....
1. Why relabel something other than what it is? After all, it already has a label and proper function, it would seem easier to sell an orange as an orange rather than trying to paint it to look like an apple.
2. Unless the they have a fully automated system, it seems impossible to profit from manual chip salvage in bulk. If it took only a minute to refurbish each component, then even at a $1 each per component, the labor required is BARELY worth the return.
I can buy almost any new component or even IC's for a $1 or less.
I am pretty sure a person could sell salvage components as is and with less effort , and make better money. why would anyone refurbish a capacitor? for money no less? :horse: :palm:
Bud:
--- Quote from: CRCLARKE on January 05, 2020, 06:52:31 pm ---
--- Quote from: Bud on January 05, 2020, 06:30:27 pm ---There is your problem. Buy from a reputable source.
--- End quote ---
but none of shady sellers admit to being "non-reputable"
Where do you get Your eeproms from?
--- End quote ---
I mean industrial parts suppliers, Digikey, Mouser, Arrow, Element14, and such. If you get your parts from random sellers on .bay and .express, you will always be in situations like the one you are in right now, that is - you will not know if the problem relates to bad parts or to your designs. You can eliminate the parts variable in the equation and focus on designs.
CRCLARKE:
DigiKey is my favorite site! They are not always the cheapest but they are reliable and best of all they have quick shipping. Especially for the average Canadian Eskimo
but they do not offer a lot of options for eeproms.
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