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Old 15th August 2007, 04:20 PM   #11
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On semi 2N3773

Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

The thickness of metal base is thinner than the "Toshiba"
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Old 15th August 2007, 04:24 PM   #12
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Quote:
Originally posted by jaycee
It is a fake... Toshiba have confirmed that they have never manufactured ANY "2N" devices, and not the 2N3773.
I have found on datasheetarchive an old photo of 2N3055 Toshiba.
Perhaps in past Toshiba built these on license.

(I have bought many 2N3055 Toshiba (same red label of 3773) )

the ON 2N3055 have a copper base between silicon chip and external base.
http://ck703.altervista.org/immagini/2N3055AA.JPG
Click the image to open in full size.
the Toshiba 2N3055 silicon chip is directly mounted on metal base.
Click the image to open in full size.
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Old 15th August 2007, 05:50 PM   #13
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Default I could not find exactly the one you want


But i have found many fake transistors with this kind of paint into the numbers.

Those Toshibas are wonderfull.... very fast transistors.... fast the explode!

regards,

Carlos
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File Type: jpg ready to explode.jpg (35.0 KB, 1037 views)
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Old 15th August 2007, 05:51 PM   #14
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Default A very beloved good friend we had in the past


Wonderfull units.... the best ones, huge units, good case, good metal, heavy, fine construction and good performance.

Some of those folks could go to 4 Megahertz, informations from Klaas...the "H" units could go to 4 Megahertz, other numbers worked to 1 and 2 Megahertz only.

regards,

Carlos
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File Type: jpg 2n3055h_rca.jpg (53.9 KB, 938 views)
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Old 15th August 2007, 05:53 PM   #15
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Default My good neighboors in America..... Mexico, use to produce nice units too.


2N3773 was considered the big brother .... more power and more current compared with the eldest brother, the 2N3055, but used as a directly, safe and guaranteed replacement to the 2N3055.


regards,

Carlos
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File Type: jpg 2n3055_mex.jpg (64.8 KB, 763 views)
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Old 15th August 2007, 05:58 PM   #16
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Default Gold units seems not fake ones.... well...lucky guy


What we can expect from a guy called GOLD!

Vá molto benne carissimo fratello!

regards,

Carlos
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Old 15th August 2007, 07:33 PM   #17
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Default Re: Gold units seems not fake ones.... well...lucky guy

Quote:
Originally posted by destroyer X

What we can expect from a guy called GOLD!

Vá molto benne carissimo fratello!

regards,

Carlos
Ciao Carlos

I have found again the photos of the two open transistors.

2N3055 ON Semi
Click the image to open in full size.

2N3055 Toshiba
Click the image to open in full size.


Saluti dall' Italia
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Old 16th August 2007, 01:51 AM   #18
aldovan is offline aldovan  Brazil
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Default This toshiba 2N3055 is fake

I open my Toshiba 2N3773 and the interior is the same Toshiba 2N3055. This small chip do not suport 100W !!!
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Old 25th March 2008, 11:09 AM   #19
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Default Re: This toshiba 2N3055 is fake

Quote:
Originally posted by aldovan
I open my Toshiba 2N3773 and the interior is the same Toshiba 2N3055. This small chip do not suport 100W !!!
this is Mine..

Click the image to open in full size.

now I have to find the system to remove the glue...
perhaps with the gasoline ?
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Old 25th March 2008, 12:03 PM   #20
AndrewT is offline AndrewT  Scotland
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Quote:
Originally posted by jaycee
It is a fake... Toshiba have confirmed that they have never manufactured ANY "2N" devices, and not the 2N3773.
what!
I have various ages of amplifiers fitted with Toshiba To3 2n3773 transistors going back to the late 70s.
I have a copy of Toshiba's datasheet from the 80s.
Toshiba must have a very short memory or you asked the wrong question.
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