All these series of devices, and many more types are Japanese numbers.
Other companies buy them up for productions, and have the manufactures
screen their names on them (the name of the buyer), to say what they
want. In many instances they also change the numbers to their own house
numbers, if they want the exclusive spare parts sales. This way the
servicer cannot have any spec listing, because the part is a house
number.
With popular type numbers, you may find many manufactures having the
same part number type listed. But, maybe only one or two manufactures
originally made the part.
--
Greetings,
Jerry Greenberg GLG Technologies GLG
==============================================
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http://www.zoom-one.com/glgtech.htm
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"Watrson A.Name" wrote in message
m...
The TO-92 transistor package is marked
C1815GR
PH 3 9
From my past experience I surmise that it's a 2SC1815 from Philips,
right? Also, I surmise that this is a Japanese transistor number.
Anyway I google for 2SC1815 and of course nothing having to do with
data sheets comes up, just thousands of companies wanting to sell
them.
Somehow I get the idea that the 2SC1815 is made by Toshiba so I go to
their website and go thru menues and click on 'view details' but
nothing happens. I look at the bottom of the screen and it says
something about javascript so I figured that Mozilla wasn't going to
run that, so I changed to IE 6 and it ran, and I could view and save
their data sheet for 2SC1815, in Adobe Acrobat Reader .PDF.
But I'm pretty sure this is a Philips transistor so I go to their
website and search for 2SC1815 and it says "No search results could be
found using the given input."
So I go all sorts of these product selection menues, and finally come
to a couple hundred transistors. All I can find is 2PC1815 so I click
on that but nothing happened. So I go back to the screen with a
search fill-in and I search for 2PC1815 and _finally_ I get a data
sheet for the transistor. I compared the specs with those from the
Toshiba data sheet, and the 2PC1815 is Philips' version of the
2SC1815. But Philips' data sheet gives no graphs, just text
information.
So I go back to the Toshiba data sheet and find from their graphs that
the Ft of 80 MHz isn't typical, it's a minimum, and the actual typical
Ft is more like 200 to 300 MHz at typical I and V. Which was really
what I wanted to know all along.
I feel like I could pull a rabbit out of a hat after all that zigging
and zagging.
Philips motto is "Let's Make things better." Yeah, right. More like
substitute worse for better.
--
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###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/e...s/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 at hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it:
http://physics.nist.gov/cuu/Units/binary.html
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