Samples from ONsemi fakes ?

Tekko · 28th June 2011, 01:20 PM

Some of the samples i ordered from ONsemi arrived today.

Two out of the three were marked phillipines and the last one china, this got me a bit worried.

Is there any cause for concern that the china ones could be fakes ?? The packaging style is different also from the others.

tinitus · 28th June 2011, 01:22 PM

I guess they use factories all over the world

but even if not fakes, question is whether they differ just slightly from each other
in other words, not from same 'batch', for sure

Tekko · 28th June 2011, 01:32 PM

Atleast its att NPN from one batch and the PNP ones from the other, but i suppose optimum would be both NPN and PNP from same batch for best performance.

Quesion is why they imported the MJW21196's ones and not the MJW21195's

The MJL4281A's were also phillipines, the MJL4302's are yet to arrive, i wonder why they sent one order in 3 separate shipments.

tinitus · 28th June 2011, 01:59 PM

Quote:

Originally Posted by Tekko

Atleast its att NPN from one batch and the PNP ones from the other........

ahh, that makes more sense

AndrewT · 28th June 2011, 02:29 PM

Quote:

Originally Posted by Tekko

........ NPN from one batch and the PNP ones from the other, but i suppose optimum would be both NPN and PNP from same batch for best performance..........

I don't know, I'm not in the industry, but I doubt you can get both NPN and PNP complementaries from the same wafer (batch).
I suspect different wafer with different chemicals at different temperatures/pressures for different times.

jaycee · 28th June 2011, 06:11 PM

Take pictures. If in doubt, send them to OnSemi to look at.

HighTec · 28th June 2011, 06:21 PM

Quote:

Originally Posted by jaycee

Take pictures. If in doubt, send them to OnSemi to look at.

Yeah, it would be nice to show those pics here. Diy audio grand jury is ready!

EUVL · 28th June 2011, 06:35 PM

Give yourselves one good reason why On Semi would bother to get "fake" products of their own from somewhere else and send them to their customers as evaluation samples.

Give yourselves another sensible reason why a manuafcturer would make different devices on one wafer.

lineup · 28th June 2011, 06:39 PM

They are genuine.
They make good things in China and Russia, too. Most of it in fact.
Crap is made everywhere, in USA, Europe and Africa, Japan.

HighTec · 28th June 2011, 06:40 PM

Quote:

Originally Posted by EUVL

Give yourselves one good reason why On Semi would bother to get "fake" products of their own from somewhere else and send them to their customers as evaluation samples.

Give yourselves another sensible reason why a manuafcturer would make different devices on one wafer.

Agree. It would be like shooting your own foot.

28th June 2011, 01:20 PM	#1
Tekko diyAudio Member Join Date: Jan 2005	Samples from ONsemi fakes ? Some of the samples i ordered from ONsemi arrived today. Two out of the three were marked phillipines and the last one china, this got me a bit worried. Is there any cause for concern that the china ones could be fakes ?? The packaging style is different also from the others. __________________ The point of life is to build atleast one audio amplifier before you die.

28th June 2011, 01:32 PM	#3
Tekko diyAudio Member Join Date: Jan 2005	Atleast its att NPN from one batch and the PNP ones from the other, but i suppose optimum would be both NPN and PNP from same batch for best performance. Quesion is why they imported the MJW21196's ones and not the MJW21195's The MJL4281A's were also phillipines, the MJL4302's are yet to arrive, i wonder why they sent one order in 3 separate shipments. __________________ The point of life is to build atleast one audio amplifier before you die.

28th June 2011, 06:39 PM	#9
lineup diyAudio Member Join Date: Dec 2005 Location: the north	They are genuine. They make good things in China and Russia, too. Most of it in fact. Crap is made everywhere, in USA, Europe and Africa, Japan. __________________ lineup

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28th June 2011, 01:22 PM	#2
tinitus diyAudio Moderator Join Date: Nov 2005	I guess they use factories all over the world but even if not fakes, question is whether they differ just slightly from each other in other words, not from same 'batch', for sure

28th June 2011, 06:11 PM	#6
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Take pictures. If in doubt, send them to OnSemi to look at.

28th June 2011, 06:35 PM	#8
EUVL diyAudio Member Join Date: Oct 2003	Give yourselves one good reason why On Semi would bother to get "fake" products of their own from somewhere else and send them to their customers as evaluation samples. Give yourselves another sensible reason why a manuafcturer would make different devices on one wafer.

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