Some manufacturers pre-tin the leads, It helps prevent corrosion. Also if the flux is not removed good enough it will over time leave a dusty type surface. Also if it's salvaged it doesn't mean its a fake its just used. We salvage chips ALL the time at work and a good 99.9% of the time they work as advertised. Spotting a fake chip is pretty difficult unless you actually have worked or work for that manufacturer. The only real way other than that is to test it in a circuit and even then we've had chips fall short of the manufacturers specs. If you have purchased a large batch of chips, and it's for a critical project, it's a good idea to build a test circuit for the conditions in which it will be used and then test them all. Thanks for the interesting video. Best Wishes n Blessings. Keith 30+ years in electronic repair.
May I suggest that another possibility is that these are manufacturers surplus. When I worked in a factory in the 80's, due to environmental storage problems, when we received a batch of ICs (100s or 1000s), the girls used to tin them in a solder pot (using liquid flux) up over the seating plane. The flux was vapour-cleaned before they were placed in the stores. If we didn't tin them like this, sometimes they would oxidise and be unsolderable - ones like the 'clean' one would literally have purple leads after a few months. It's hard to tell, but the grotty looking one looks like some PDIP devices I've seen that had the tinning flux had overheated (dipped too deep, or dropped in the solder pot by an inexperienced operator). Was quite hard to make them look *new* again either way, but subsequent cleaning would usually take care of it.
Dunno why the video is about spotting fakes then stating you haven't tested them. Also a chip being salvaged but being legit and it being brand new but fake is two totally different things.
+trashchris yes of course, salvaged and new / fake are different. But alas, often fakes are NOT new but pulled from old thrown out circuit boards and relabelled. They use salvaged IC's from thrown away equipment because it is junk and free.
+DIY Guitar Pedals Thanks for this video and link to further reading. Very interesting! Now I need to go through my stock to see if I have any. Curious if you ever had any issues with Tayda parts. I mean they're usually barely acceptable quality (and kind of a shitty company for several reasons), but I think that most of the people here have at least a few Tayda parts in their inventory...whether they're proud of it or not:)
+kjsippel Cheers mate! That's a bit of a conversation right there :) For IC's and transistors they are probably ok, but you just have to remember that you are dealing with a company that sources THE CHEAPEST they can find and the risks that imposes. Their have been fakes through tayda but I think this was only isolated to a couple of incidence (j201 was one of them).
I see what ur saying and for all intents and purposes agree. However, If the eBay supplier lists them as "new" and they are actually used/salvaged, they've still perpetrated a fraud to their customer. I love the idea of breathing new life into something that would have ended up in a landfill. I might even consider buying them for a discount. Buy it shouldn't be based on a lie.
The chips I've seen sanded down are often used by various device manufacturers so that competitors can't find part numbers to duplicate whatever the product is. Theres a couple big flaws in that procedure: 1st it makes repairs a lot more difficult or impossible. The other is they often use a dremel which generates heat that could possibly damage the internals (notably the very fine internal wiring from the external pins to the semiconductor itself). Also makes it easier for fakes to rebadge the IC as something else more valuable.
Great info! I always buy from dealers I trust, it costs me more, but I have peace of mind. That being said, at least I have some info to help me spot a fake before I waste time debugging my work.
Just rebuilt a dyna comp on breadboard for the 4th time, each time convinced it was my bad layouts. Penny has finally dropped. Those ten ca3080e's I bought from china are something else......and whatever they are they make a mean overdrive pedal when dropped into a dyna comp circuit.....but it sure as shit aint compressing anything. So after four rebuilds and two lost weeks I'm going to come right out and say it. Fuck china, fuck their counterfeit goods, and fuck their ebay businesses. I steer clear from now on. I'll find another way or change my compression preferences. NOTHING is worth the pure frustration I've experienced from the last 4 builds. Nothing. I'd rather go without and just pretend I can hear compression coming from my amp.......I've certainly been driven up the wall far enough to be crazy enough to try that and be bird shit happy with it.
I'm in the UK so out of curiosity I've just order a 7052 from an Ebay seller I've used before. Cost me about $5 Aus, I'll let you know how I get on with it.
Mr. Reinterpret Cast It was fine. I built it out on a breadboard and it worked ok. I just used a tone generator for the source so I'm not sure how good the audio quality would be.
i am yet to find a proper cmos 7555 in aliexpress all i received in the name of those are either regular lm555 or some ever worse bipolar current guzzlers choking at even 250KHz. 😀
Those look like they have been salvaged, which would mean that they aren't fakes! And getting reclaimed/salvaged parts is better than not being able to get the parts! I would say fakes are knockoffs, and they won't work! Those repurposed ones will probably work! And are the best chance for some parts! Reclaimed/salvaged is better then fake
Sorry that you got some criticism at the bottom there. Some people just don't get it ;) Well, if all chips are the same then all transistors of the same labelling must be the same? Right? No. It's pretty frustrating, the amount of crap that people know they are screwing you with.
+DIY Guitar Pedals after a test it doesent really matter anymore. i have bought microcontrollers i'm now 95% sure are fake, but they are faithful copies that work pretty much like the real deal. i'm not advocating buying anything fake, but if it works it works, fake or not.
+ravener Definitely agree ravener! I dont even care if its salvaged. Unfortunately sometimes they are fake and they dont work (a relabelled chip). Also with things like say, lm308, you buy specifically for its unique slew rate, you may just get any other op-amp chip and it wont sound quite the same but will work and without an real LM308 to compare you may not ever know.
R u mad? Really??? electronically all ICs are the same inside, they have the same internal schematics. The only things that can change a parameter in an opamp are the input and feedback resistors. Why bother with some shit like this? a lm4558 is the exact same of the japanese version. Why buy the expensive version??????WHYYYYYYYYY?
+Joao Victor Predebon Chips vary from fab to fab, doping variances etc. Not to mention even through the basic function of an ic might be similar it doesn't mean they would be identical, especially given they most likely have different layouts underneath.
Some manufacturers pre-tin the leads, It helps prevent corrosion. Also if the flux is not removed good enough it will over time leave a dusty type surface. Also if it's salvaged it doesn't mean its a fake its just used. We salvage chips ALL the time at work and a good 99.9% of the time they work as advertised. Spotting a fake chip is pretty difficult unless you actually have worked or work for that manufacturer. The only real way other than that is to test it in a circuit and even then we've had chips fall short of the manufacturers specs. If you have purchased a large batch of chips, and it's for a critical project, it's a good idea to build a test circuit for the conditions in which it will be used and then test them all. Thanks for the interesting video.
Best Wishes n Blessings. Keith
30+ years in electronic repair.
May I suggest that another possibility is that these are manufacturers surplus. When I worked in a factory in the 80's, due to environmental storage problems, when we received a batch of ICs (100s or 1000s), the girls used to tin them in a solder pot (using liquid flux) up over the seating plane. The flux was vapour-cleaned before they were placed in the stores. If we didn't tin them like this, sometimes they would oxidise and be unsolderable - ones like the 'clean' one would literally have purple leads after a few months. It's hard to tell, but the grotty looking one looks like some PDIP devices I've seen that had the tinning flux had overheated (dipped too deep, or dropped in the solder pot by an inexperienced operator). Was quite hard to make them look *new* again either way, but subsequent cleaning would usually take care of it.
Dunno why the video is about spotting fakes then stating you haven't tested them.
Also a chip being salvaged but being legit and it being brand new but fake is two totally different things.
+trashchris yes of course, salvaged and new / fake are different. But alas, often fakes are NOT new but pulled from old thrown out circuit boards and relabelled. They use salvaged IC's from thrown away equipment because it is junk and free.
+DIY Guitar Pedals Thanks for this video and link to further reading. Very interesting! Now I need to go through my stock to see if I have any. Curious if you ever had any issues with Tayda parts. I mean they're usually barely acceptable quality (and kind of a shitty company for several reasons), but I think that most of the people here have at least a few Tayda parts in their inventory...whether they're proud of it or not:)
+kjsippel Cheers mate! That's a bit of a conversation right there :) For IC's and transistors they are probably ok, but you just have to remember that you are dealing with a company that sources THE CHEAPEST they can find and the risks that imposes. Their have been fakes through tayda but I think this was only isolated to a couple of incidence (j201 was one of them).
I see what ur saying and for all intents and purposes agree. However,
If the eBay supplier lists them as "new" and they are actually used/salvaged, they've still perpetrated a fraud to their customer. I love the idea of breathing new life into something that would have ended up in a landfill. I might even consider buying them for a discount. Buy it shouldn't be based on a lie.
@@DiyguitarpedalsAu i bought 5pcs J201 from china... My God i got crazy on my project its a Big FAKE!! (j201)
Tungsram...Hungary's best Electronics factory.
The chips I've seen sanded down are often used by various device manufacturers so that competitors can't find part numbers to duplicate whatever the product is. Theres a couple big flaws in that procedure: 1st it makes repairs a lot more difficult or impossible. The other is they often use a dremel which generates heat that could possibly damage the internals (notably the very fine internal wiring from the external pins to the semiconductor itself). Also makes it easier for fakes to rebadge the IC as something else more valuable.
do you have a way for me to message you? i tried to register at badbean and it was all messed up. id like to get in touch
Great info! I always buy from dealers I trust, it costs me more, but I have peace of mind. That being said, at least I have some info to help me spot a fake before I waste time debugging my work.
if they are sold as salvaged then you get what you pay for. If they are salvaged but sold as NEW then i have a problem.
+spud4242 Yep listed as "brand new".
Just rebuilt a dyna comp on breadboard for the 4th time, each time convinced it was my bad layouts.
Penny has finally dropped. Those ten ca3080e's I bought from china are something else......and whatever they are they make a mean overdrive pedal when dropped into a dyna comp circuit.....but it sure as shit aint compressing anything.
So after four rebuilds and two lost weeks I'm going to come right out and say it.
Fuck china, fuck their counterfeit goods, and fuck their ebay businesses. I steer clear from now on.
I'll find another way or change my compression preferences. NOTHING is worth the pure frustration I've experienced from the last 4 builds. Nothing. I'd rather go without and just pretend I can hear compression coming from my amp.......I've certainly been driven up the wall far enough to be crazy enough to try that and be bird shit happy with it.
I was thinking the others because a nice finish is indicative of them being refinished
I guess trem chip tune applies to this and manufacture should keep making them as long there a demand. but not first it happen.
I'm in the UK so out of curiosity I've just order a 7052 from an Ebay seller I've used before. Cost me about $5 Aus, I'll let you know how I get on with it.
+tobortine How did it go?
Mr. Reinterpret Cast
It was fine. I built it out on a breadboard and it worked ok. I just used a tone generator for the source so I'm not sure how good the audio quality would be.
Is this the same for jfets and transistors from eBay too?
I wouldn't touch jfets on ebay ben, a lot of counterfeits. Use SMT and converter pcbs cheers
i am yet to find a proper cmos 7555 in aliexpress all i received in the name of those are either regular lm555 or some ever worse bipolar current guzzlers choking at even 250KHz. 😀
Hi Paul, Digikey or Mouser, Tayda is pretty good and cheap. See ya, C.
the one on the right is autentic and the other one fake!! the shine is because its an obsolete chip hence taken from old boards and hence tinned.
If the legs are pre-soldered is fake or salvage. Either way, you don't want them....
Those look like they have been salvaged, which would mean that they aren't fakes! And getting reclaimed/salvaged parts is better than not being able to get the parts!
I would say fakes are knockoffs, and they won't work!
Those repurposed ones will probably work! And are the best chance for some parts!
Reclaimed/salvaged is better then fake
Sorry that you got some criticism at the bottom there. Some people just don't get it ;)
Well, if all chips are the same then all transistors of the same labelling must be the same? Right? No.
It's pretty frustrating, the amount of crap that people know they are screwing you with.
some are justlooking at the flaked nails,comparing the left and the right.
i just got a volt meter from china for a buck. didnt work so i figure it was fake. but it was just wired wrong. best buck i ever spent
just bought some Mn3007 and
Cd4046
off ebay now I am wondering if they are fakes
+screamsofinsanity Try it in circuit. That will get you a 90% sure answer if it is fake or not.
+DIY Guitar Pedals yeah I figured that would be the only way to be sure...lol.
+DIY Guitar Pedals after a test it doesent really matter anymore. i have bought microcontrollers i'm now 95% sure are fake, but they are faithful copies that work pretty much like the real deal. i'm not advocating buying anything fake, but if it works it works, fake or not.
+ravener Definitely agree ravener! I dont even care if its salvaged. Unfortunately sometimes they are fake and they dont work (a relabelled chip). Also with things like say, lm308, you buy specifically for its unique slew rate, you may just get any other op-amp chip and it wont sound quite the same but will work and without an real LM308 to compare you may not ever know.
+ravener agreed IF it works.
R u mad? Really??? electronically all ICs are the same inside, they have the same internal schematics. The only things that can change a parameter in an opamp are the input and feedback resistors. Why bother with some shit like this? a lm4558 is the exact same of the japanese version. Why buy the expensive version??????WHYYYYYYYYY?
+Joao Victor Predebon Chips vary from fab to fab, doping variances etc. Not to mention even through the basic function of an ic might be similar it doesn't mean they would be identical, especially given they most likely have different layouts underneath.
Stop biting your nails. It really doesn't look good, especially at closeup range...
easier said then done :)