I am going to trade a BC547 transistor for a TSxxxx transistor (Taiwan Semiconductors).
In the datasheet of the BC547 I have read the following:
Vcbo=50V Vces=50V Vebo=6V Ic=100mA
I took a look on the website of Taiwan Semiconductors. Here's a nice overview of their transistors and their V's and Ic:
So I explored the list and tried to find a matching substitutor. But I notices that sometimes the V's are the same, but then the Ic is too high. And then when I seem to find a transistor with the correct Ic, it's the V's are way too high again. In short: there's no perfectly matching transistor.
Does this mean non-of these transistors can replace my BC547? I read on this newsgroup that very often any transistor will do. (which doesn't really make sense imho, since often there are several types of transistors used in the same circuit). Still I will have to make a decision. So I guess not all factors are as important and that there will be a transistor that will be good enough?
My main question is: what is the most important factor of a transistor? Is it the Ic, Vcbo, Vces or the Vebo. And do my V's and Ic have to be at least as high of the values of my previous transistor, or should they only be maximum the same value and not cross it? Or do I just need to find values as close as possible?
Thank you in advance, I hope somebody can clear this up for me BramGo
(In case anybody wonders... It's really more as an experiment I am substituting the transistor.)