C9012 Transistor Datasheet
Before searching for C9012 transistor datasheet you may have thought that it was a NPN transistor because it has a letter “C” in front. C actually is an European code while 2SC is a Japanese code. Most of the time repair tech will refer C as 2SC so that it will be easier for them to search from the databook or internet.
If the repair tech treat C9012 as 2SC9012 then he or she will not be able to find the information. In this repair field one has to be flexible because many manufacturer does not follow the standard code anymore. The above transistor is actually a PNP transistor and the real part number is KTC9012. This means the manufacturer have removed the word “KT” and it left only C9012. If you are a beginner you will save lots of time of not searching for 2SC9012 information.
If you type in C9012 transistor datasheet in the search engine, yes you will get the info. But what if the part number is not C9012 and they are some other part number? The other day there was an email to ask me to help to find a part number that starts with P70N…… I told him to add ST in front of the part number and he could managed to locate the exact part number.
The story we have learned here about the C9012 transistor pdf was that don’t believe every part number you have seen. You have to do some research first before you decide what to search from the internet or equivalent databook. Hope after reading this post, you will have no problem in finding the right data for C9012 transistor datasheet and other funny part number.
By the way here is the link to the C9012 transistor datasheet.
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beh
March 29, 2012 at 1:38 pm
HI JESTINE
ok my question is why manufacturers are not following the standard rules?!
thanks
beh
Jestine Yong
March 30, 2012 at 12:08 am
Hi Beh,
I'm not sure why. During my early time I don't see all the funny part number and that time it was easy to look for the components data from databook even though at that time do nothave internet yet.
SAUL
September 16, 2016 at 3:17 pm
HOW TO DETERMINE THE FUNCTIONAL OF TRANSISTOR
Jestine Yong
September 19, 2016 at 10:59 am
Hi Saul,
By checking the transistor with multimeter. You also can create a simple transistor circuit to see if it switch or amplify.
Jestine
beh
March 30, 2012 at 3:40 am
HI JESTINE
i have had such confusion also in my early time in this job.some times i think the manufacturers dose not care about what they are print on the components and/or may be is just misprinting over the parts but they do not care about the mistakes and they do not try to reprint the correct codes just send the prouducts to market specially for assembly factories like SONY OR TOSHIBA or others
Jestine Yong
March 30, 2012 at 8:51 am
HI Beh,
There are too many semiconductor manufacturers. If you look at International Rectifier that produce lots of Mosfet, they label their parts with the part number IRF, IRFS, IRFI, IRFP and etc.
Jestine
beh
March 31, 2012 at 3:41 am
HI JESTINE
do you mean the manufacturers of international rectifires lable thier prouducts by the code of Mosfet like IRF or IRFS....? ?
thanks
beh
Jestine Yong
March 31, 2012 at 5:10 am
Hi Beh,
Yes if you see the part number like IRF is a short form for International Rectifier.
Jestine
beh
March 31, 2012 at 1:47 pm
HI JESTINE
any way this is also a great discovery and amazing
take care
beh
beh
March 31, 2012 at 1:54 pm
and may be there is no enough numbers and letters in nature and that is why they do in this way?!
Jestine Yong
March 31, 2012 at 11:17 pm
HI Beh,
They could have print it smaller as this will not confuse repairer especially the beginners
Jestine
nestor hrabinski
April 9, 2012 at 12:28 pm
Hi: Jestine, how do i replace a NTE 270 transister on a speed control that is full open on a hobby transformer made by Model Rectifier Corp. power and sound 9000 FY3. Any hints would be helpfull.Thanks nestor
Jestine Yong
April 11, 2012 at 12:32 am
Hi nestor,
What is the original part number?
Jestine
Jidah
March 15, 2018 at 12:45 pm
how to search replacement for C9012? i don't quite understand if any of the datasheets does any help in finding the replacement.
Jestine Yong
March 17, 2018 at 12:54 pm
Hi Jidah,
This part is common and search for KTC9012
Jestine