Yes, I see that in the National sheet. Right below where it claims 8 amps of current with ≤10 volts differential, which is 80 watts. How can that be? I don't get it.......
Well, I guess, but it seems to be quite a contradiction to me---it will output 8 amps at Vdiff ≤10 volts as long as Vdiff X 8 is less than 50. Huh?
You're probably over thinking it, I'm often guilty of the same thing.. 
Basically the device doesn't meet some key specifications if dissipation exceeds 50W (most likely thermal drift and a few other things) or it is a typo.
I think the take away here is that average dissipation shouldn't exceed 50W, higher dissipations to the limit of 80W are acceptable if the voltage across the device is 10V or less. Reliability is likely to be adversely affected.
Basically the device doesn't meet some key specifications if dissipation exceeds 50W (most likely thermal drift and a few other things) or it is a typo.I think the take away here is that average dissipation shouldn't exceed 50W, higher dissipations to the limit of 80W are acceptable if the voltage across the device is 10V or less. Reliability is likely to be adversely affected.
hello. Do you think this is legitim LT1083 ic?
5pcs IC to 3P LT1083CP LT1083CP PBF LT1083CP Adj M | eBay
5pcs IC to 3P LT1083CP LT1083CP PBF LT1083CP Adj M | eBay
I would be doubtful, it's awfully cheap and the logo doesn't look as cleanly rendered as on the few I have seen in the past.
They are no longer recommended for new designs and currently there don't seem to be any in distribution here in the U.S.
I paid a lot of money for the last ones I purchased from Digi-Key a few years ago.
I've not found eBay to be worth the risk for parts like this.
They are no longer recommended for new designs and currently there don't seem to be any in distribution here in the U.S.
I paid a lot of money for the last ones I purchased from Digi-Key a few years ago.
I've not found eBay to be worth the risk for parts like this.
Notice there's no date code---???? Also no "circled e3" like I see on mine. It's a CP-5, as well---5 volt fixed. I doubt it's real.
Well if you can make money making counterfeit eggs and grapes........ (eggs I sorta get, but grapes.... that would take a longggg time and a lot of effort)
I bet a lot of this stuff is a result of factories sitting idle - might as well make something.
Fake audiophile opamps: OPA627 (AD744?!) : ZeptoBars
I remember reading on uh hackaday I think - can't find the article now - about some counterfeit IC that was actually performing better the original.
Stuff is pretty interesting!
I remember reading on uh hackaday I think - can't find the article now - about some counterfeit IC that was actually performing better the original.
Stuff is pretty interesting!
Just read the article. Those faked OPA627AUs are just remarked chips. I don't think anyone could acquire wafers from AD or BB. The source is important if you want buy stuff from China. For instance, Weiliang is a good source. They only sell authentic parts.
BTW, I have some authentic OPA627AUs on Swat Meet section.
The usual way is with fuming nitric acid. The metal can is just filed off though you might be able to find a surplus TO-can opener.
Please regard that every last datasheet ever made isn't significantly superior to fake parts. And then proceed with even half the normal expected amount of care to make a circuit work. Do at least please hit that minimum quality threshold. Also, you never read this and you weren't idiotic enough to need this briefing. This never happened.
I am a hardware designer for a lifetime and always used datasheets as basic input. These are specifications delivered and guaranteed from the manufacturers. And if the parts fail to meet these specs, the OEM is in trouble.
So your claim looks ridicolous to me, can you prove some evidence?
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