hey can anyone pls tell me the significance of the alphabets used to indicate a particular semiconductor
for example in the bjt BC547 what does B n C stand for?

 

Hello,

Take a look at this page on transistor codeing:
http://www.elexp.com/t_tranmk.htm
Section 3 is about the european codes, wich is used for the BC147 and BC547.

This is a link from the EDUCYPEDIA page on component codes:
http://www.educypedia.be/electronics/datacomponent.htm

Bertus