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2SJ162 and 2SK1058 prone to counterfeit ?
2SJ162 and 2SK1058 prone to counterfeit ?
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Old 31st October 2010, 11:29 AM   #1
Tekko is offline Tekko
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Default 2SJ162 and 2SK1058 prone to counterfeit ?

How common is it to find fake 2SJ162's and 2SK1058's ?

Im looking at these on ebay and it got me wondering: 2SJ162 & 2SK1058 RENESAS High Power Audio MOSFET - eBay (item 400168703676 end time Oct-31-10 15:12:40 PDT)

Btw i find it a bit strange that theres no mention in the datasheet about them beeing vertical or lateral but i assume they are lateral since that is most commonly related to audio.
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Old 4th November 2010, 01:47 PM   #2
Henry8 is offline Henry8
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I brought from jpr electronics in the UK, good price too.
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Old 4th November 2010, 02:13 PM   #3
AndrewT is offline AndrewT  Scotland
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They are Lateral mosFETs, but you cannot assume that audio use equates to Lateral.
Some Vertical mosFETs are designed for audio and many more are used in audio.
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Old 4th November 2010, 02:55 PM   #4
Praudio is offline Praudio
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Tekko, look in store for transistors (electronics salon) sometime it's write original, or no mention original or not?????????
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Old 4th November 2010, 06:28 PM   #5
NagysAudio is offline NagysAudio  United States
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Tekko - Without a doubt fake.
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Old 4th November 2010, 06:46 PM   #6
ostripper is offline ostripper  United States
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Why would anybody buy semi's off of ebay ??
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Old 4th November 2010, 06:55 PM   #7
Tekko is offline Tekko
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Because its cheaper, everi single semiconductor part i own was bought on ebay.
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Old 4th November 2010, 08:13 PM   #8
NagysAudio is offline NagysAudio  United States
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And every single one you've bought from Hong Kong, or China are fake. 100% all of them. It's not even a question.

Last edited by NagysAudio; 4th November 2010 at 08:18 PM.
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Old 4th November 2010, 09:18 PM   #9
Tekko is offline Tekko
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So that means every consumer product that say "made in china" likely contain all fake components ?
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Old 4th November 2010, 09:30 PM   #10
Lee Knatta is offline Lee Knatta  Germany
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No. This means that semiconductors and other parts bought in China are likely to be fakes.
Especially discontinued audio parts (I know the lat FET discussed here are still in production).

I heard of serious problems a lot of companies experienced during the latest economy panic with the parts they stocked from China. Fakes, fakes, fakes. E.g. bought a reel of semis, first 100 parts okay, 2900 without dies inside and so on. Even worse to receive parts of poor quality that look good and spec like the originals but fail in field later.

Btw: First time I agree with Nagys somehow.
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