F5 with 2SK2013/2SJ313 - Page 23 - diyAudio
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Old 28th July 2011, 10:59 PM   #221
CeeVee is offline CeeVee  Portugal
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I know juma, mine have interior exactly like the pictures in the thread here in forum about fake transistors....the one with lots of pictures fake/ genuine.

and these are not the only fake ones, i bought some 2sj74BL from them and sent PMA a few to test...fake as well !

please check
My Transistors, original or copy?

post 344 to 346

the ones i got from utsourse are the fake ones here.......i wish i was wrong but i'm not!

Last edited by CeeVee; 28th July 2011 at 11:20 PM.
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Old 28th July 2011, 11:24 PM   #222
Luke is offline Luke  New Zealand
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Quote:
Originally Posted by buzzforb View Post
After reading throught this thread, I was keen on trying some of these fets in upcoming builds. I realized very quickly that they are hard to get a hold of now that it seems Zhoufang's stock is depleted. I have found another source that i believe may be able to loacte the parts in large quantity. After verifying that they are indeed real, I would be willing to offer a group buy if there was interest. Sorry if this is the wrong place to do this, but I did not know where to post, as I am not in possession of them and I am not a vendor
Yes I would like a few please.
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Old 28th July 2011, 11:29 PM   #223
CeeVee is offline CeeVee  Portugal
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If they are genuine i'm in as well.
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Old 28th July 2011, 11:49 PM   #224
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No problem, but what are some quantities? I have been quoted on 100 of each but supposedly more are available. I will move the post to group buy forum.
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Old 29th July 2011, 12:50 AM   #225
prakit is offline prakit  Thailand
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Originally Posted by CeeVee View Post
I have bad news for you utsource parts are fake ! i have some and opened one just to see....very diferent from original !
I can confirm with CeeVee about this. But to their credit, they accepted my return without more hassle than paying for the return-shipping fee.
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Old 29th July 2011, 01:05 AM   #226
EUVL is offline EUVL  Europe
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2SK2013 is announced EOL (End of Line).
This means dealers still have 6 months to put in last orders.

http://www.semicon.toshiba.co.jp/ope...artKey=2SK2013

2SJ313 is on NRND (not recommended for new design).
That also means 6 months to a year before production stops.

http://www.semicon.toshiba.co.jp/ope...partKey=2SJ313

So I don't see any need to panic, and Zhou will probably get enough to last another 5 years for DIY use.

You can of course also consider investing in a substantial stock.
They will be like NOS tubes 5-10 years from now.




Patrick

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Last edited by EUVL; 29th July 2011 at 01:09 AM.
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Old 29th July 2011, 04:09 AM   #227
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Thanks for the input. I will post some pictures, which should help determine whether the parts are original or not. Any quick tests I can perform? Thanks.
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Old 29th July 2011, 04:17 AM   #228
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Quote:
Originally Posted by EUVL View Post
2SK2013 is announced EOL (End of Line).
This means dealers still have 6 months to put in last orders.

So I don't see any need to panic, and Zhou will probably get enough to last another 5 years for DIY use.

You can of course also consider investing in a substantial stock.
They will be like NOS tubes 5-10 years from now.
Recommended, particularly as BA-3 uses them.

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Old 29th July 2011, 04:23 AM   #229
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Thanks guys forthe heads-up about the fake 2013/313 - I had a good look at the ones I got from 'utsource' (supplied in tubes) and have also found them 'non-genuine' - the body of both the 2013 and 313s are slightly wider, the letter 'A' and the number '13' are moulded into the top edge depressions ('I' and '14' on the 313s) and doesn't have the strange lip on the top edge - also, on the back, there are 4 dimples on the genuine ones but only 3 on the 'other' ones - leads are different also.

Hope I can get a refund, too.
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Old 29th July 2011, 10:23 AM   #230
AndrewT is offline AndrewT  Scotland
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We should all gang up and use the power of the credit card companies to help push these fake vendors into bankruptcy.
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