Don't take these comments as being too negative, as you have to laugh at the lengths people go to, to scam a few bucks, take my word for it I am laughing writing this :lol: .
some legitimate sellers, but it's getting ridiculous to buy good parts, and I for one don't think that it's too much to ask, to get what you pay for. I have a small stock of good stuff for my own future use, but they were bought from legitimate sellers, who have been selling them for years, they are just NOS (New Old Stock). One of the problems is the big legitimate sellers basically don't care about selling components unless they can sell tons of them. Or in the case of these
particular 2SC1583's, they were purchased from a similar place to CTG (who I have not dealt with personally). A lot of these 'online' sellers, just handle
components, and don't have any stock. They just buy them from Hongkong/China mainland etc and make money from a handling fee without testing them, as was the case with these. Specifically, some things I have encountered:Imaginary Parts and/or scam to get your details for product spamming:
A great example of imaginary parts on a big legitimate search engine as I have mentioned before is AERI, type in BA662A
and see what you get (still), I asked them for these years ago (and they didn't exist then), but they are still there '1160 AVAILABLE', try it for yourself: :lol: http://www.aeri.com/Fakes on eBay:
There is also a ton of easily recognisable fakes on eBay with bad lettering and obvious respraying, I won't post a link as they will just vanish (look at some of the CA3080's for example). Is it a coincidence that some parts are very hard to get, become valuable, then a newly found big supply magically appears, which are then sold by a few big eBay sellers who don't show the buyers identities (selling 50pcs or 100pcs etc.). Followed by a bunch of small sellers selling 1 or 2pcs for a good deal more? Or even more hilarious, one seller slamming another, when they are both selling identical stock :lol: .
It is very easy I gather to respray a transistor that is banned but in the same package as an expensive one (e.g., TO-3), and some of the rarer power transistors are very expensive. Op-Amps would be easy to counterfeit as some even have exactly the same pins, but I have heard of many cases where a chip with the same number of legs is just resprayed.
** Update 25th June 2009: I saw some parts on eBay today, and asked how many they had, and how much for all, and they gave me a price (same price, just one postage). As soon as I asked for a close up of the parts, as the image was taken from too far away, they changed their mind and decided to sell them all by auction separately :roll:. So here is another scam I forgot about, don't buy anything that you cannot clearly
see on eBay. I noticed this on another recently, which I forgot to mention. I saw an image of 2SK30A(O)'s for sale where the 'O' in particular looked like a different font, I don't think I have seen manufacturers use a different font on a single small transistor (except of course for their logo, but which is usually only on bigger 'power' transistors).Postage scams on eBay:
I found a good scam on eBay a while ago, someone was selling some good chips for $1, I though wow I'll grab 100pcs, and do some designs with them. When I went to buy them, although they had ~100 for sale, I was limited to 10pcs, I thought well okay they are sharing them out, but no, it was because the postage was $11 per
i.e., 1 chip = $12 including postage, 10 chips = $120
including postage! :shock: :lol: Not the real thing:
There are at least two big sellers with an online presence, who people on here and other places recommend all the time, that I know of that have sold parts that are supposed to be one brand but they are not. If you mention them (which is risky for legal reasons, if they are in your country), the images/datasheets usually vanish anyway like on eBay :lol: .
I think we should have a scam thread here, so that people can report on these scams and how to avoid them. I mentioned AERI above as they stuffed me about for ages on all sorts of components, couldn't get me any as they did not really exist
, left them on the search engine even after they knew that they were not available (and they are still there :shock: ), and then spammed me with junk emails with specials :roll: . Then finally when their customer relations asked me about my experiences with them, as they probably noticed that I had placed a bunch of RFQ's (Quote Requests) but bought nothing. When I told them about my experiences, 'my' sales rep got sulky, very professional :lol: