AD584JH on eBay = fake? - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: November 27, 2017, 05:04:23 pm
content: Hi All,Since these IC's are pretty expensive (~ > 10 USD Mouser, etc.).Big change these are fake (~ 6 USD)?https://www.ebay.nl/itm/1pcs-AD584JH-IC-Integrated-Circuit-Analog-Device-IC-CAN-8/252362933940Thanks!

author: MK14
author_rank: Super Contributor
timestamp: November 27, 2017, 05:35:07 pm
content: You are risking them being fake, or second hand unsoldered from old equipment. Which at least one of the feedbacks, complains about.e.g. (Neutral feedback):Quote

author: kazan417
author_rank: Contributor
timestamp: November 27, 2017, 05:46:34 pm
content: Looks like second hand part.You should really carefully check received part that it has not soldered before. Because it can change critycal parametrs because of incorrect soldering.If you will got ic with SOLDERING MARKS ON THE PINS when it describes like new you can get money back from seller.

author: BrianHG
author_rank: Super Contributor
timestamp: November 27, 2017, 05:55:28 pm
content: You can always go down 1 grade, or in DIP and get brand new ones for 7-8$.But I believe you want the to accuracy one...

author: Freelander
author_rank: Regular Contributor
timestamp: November 27, 2017, 08:07:54 pm
content: Quote from: onesixright on November 27, 2017, 05:04:23 pmShould be ok if it works, also, as said, if it IS advertised and new and has solder marks then claim your money back (IN FULL). ! In the event of an issue with ebay, I NEVER send anything back without full insurance and tracking / signed for. If the item is faulty or not as described then the seller pays ALL costs. Sellers are unlikely to pay for the cost of return (I also insist on it in - in full - advance). They end up refunding the item and not paying for a return. If you open a case with Ebay make sure you add images. If it IS ex equipment you will end up with it for free if the seller states it is new. Win WIn. ANY seller who says 'buyer pays return postage' when it is their fault is breaking ebay rules. Tell them to go and whistle.Also, just checked AD and it's not even available for sample on the normal channels, it is specific request only so no route there. (If you are registered with AD there are some VERY nice references available for sample.) . The only ones you will struggle getting a sample of is anything developed for MIL use.It is almost certainly kosha. If ex equipment get it for free. People shouldn't advertise ex equip' as new.

author: onesixright
author_rank: Frequent Contributor
timestamp: November 28, 2017, 07:28:56 am
content: Thanks all!

author: Andreas
author_rank: Super Contributor
timestamp: November 28, 2017, 09:48:12 am
content: Hello,afaik AD uses exclusively laser marking for their devices.https://electronics.stackexchange.com/questions/86066/how-to-identify-counterfeit-analog-device-productsAnd the nose (Pin8-marker) is at the wrong position with respect to the printing. (already discussed here: )https://www.eevblog.com/forum/metrology/are-cheap-ad584-units-worth-it/msg898716/#msg898716So I guess for that price it is only a pulled (perhaps with lead extensions) and re-printed device.By the way: the german job lot dealer (Pollin) has the devices for 1.95 EUR + shippingwith best regardsAndreas

author: wraper
author_rank: Unknown
timestamp: November 28, 2017, 11:15:29 am
content: Quote from: Andreas on November 28, 2017, 09:48:12 amIf it is an old stock, they likely won't be laser marked. Most of plastic package counterfeits are laser marked as well.

author: onesixright
author_rank: Frequent Contributor
timestamp: November 29, 2017, 07:28:25 am
content: Quote from: Andreas on November 28, 2017, 09:48:12 amhttps://www.pollin.de/p/ad584jh-170125vshttps://eu.mouser.com/ProductDetail/Analog-Devices-Inc/AD584JH/?qs=%2fha2pyFadujAy51tSMusj3%2f%2fBxKfjoNLZxlMO%2fVNjPI%3d€2 vs € 15 ( and Mouser is ex vat).Thanks! Never heard of them, until now

author: Andreas
author_rank: Super Contributor
timestamp: November 29, 2017, 04:13:45 pm
content: the difference is that they are not "new" but "NOS".