Toshiba 2SC3281/2SA1302 - Are these fakes? - Page 5 - diyAudio
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Old 7th June 2009, 05:53 PM   #41
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could you do me a favor, and list for each of those two devices the following:
all of the printing on the case
the codes in the dimples on the plastic (as well as which dimple each one is in)

as well as the same for any other sets of known good and known fake transistors you have. i'm putting together a counterfeit identification guide, and i have a theory that the numbers in the dimples have some form of date coding, and the date coding should match somehow with the printed date code.
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Old 7th June 2009, 10:25 PM   #42
AndrewT is offline AndrewT  Scotland
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Hi,
surely making this detailed information available on a public Forum will assist the Fakers in selling their product.

Could we privately Email the information to you while you complete your research?
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Old 8th June 2009, 01:35 AM   #43
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Quote:
hat was a nice picture. how did you accomplish separating the epoxy from the tab and die so cleanly?
The Funny thing is I made a Video in the process of doing this My technique only shows me using a hammer and gently whacking them directly on the seam The epoxy shattered and soon split, and I pulled the two halves apart.

One thing that was obviouse about the green fake was that there was no "O" or "R" and as someone else said the screw whole was smaller, and the numbers just did not look remotely similar to the others.

I would split one of the black ones open but I left the bag of fakes at my uncles house, and won't be able to get them back till next week

I am glad now to have made a video to resort to, because I announce the exact numbers of the green fake; 7L in place of what would be 5H/5I and the number below that was 0109 I sound horrible in the video but it makes for good reference.

I also have some other Toshiba's I need more info on, doubt they are fakes but they are obsolete. These being 4x 2SC793, from an old audio amplifier I think, in TO-3 packages.
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Old 27th June 2009, 08:52 AM   #44
3nity is offline 3nity  Austria
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Hi,

I was thinking of buying a 3281/1302 pair from this store on eBay.
Did anyone had an experience with them?
I wouldn't like to buy another counterfeit part.

T.I.A.
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Old 27th June 2009, 09:33 AM   #45
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3nity,
they appear definitely genuine to me.
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Old 27th June 2009, 01:09 PM   #46
mjf is offline mjf  Austria
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hello.
i think here in austria rs-components has these parts (by magnatec/semelab).
greetings...........
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Old 27th June 2009, 02:24 PM   #47
AndrewT is offline AndrewT  Scotland
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when did Toshiba stop making these 3281/1302 devices.
How old are these Ebay items supposed to be?

When did the 1943/5200 devices come on to the market to replace the faked 3281/1302 that had flooded the market?
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Old 27th June 2009, 04:00 PM   #48
Pingrs is offline Pingrs  United Kingdom
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And they are NOT MOSFET!
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Old 27th June 2009, 04:47 PM   #49
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Spam ! I have 4 pairs original Toshiba 2SC3281/2SA1302 left for trade or sales. You can make me happy with OSCON SP caps.

They were bought about 7 years ago from the distributor. No doubt that these are originals.
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Old 12th July 2009, 01:12 AM   #50
Mpole is offline Mpole  Turkey
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I need 12 pairs genuine Toshiba 2SC3281/2SA1302 transistors (from the same batch) but I canít find the genuine ones anywhere..

@jean-paul

Can you send a photo of them here?
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