Transistors

[Frenchy007]

Hello Everyone, I am new With Electronics and also french.
Sory for any typing errors.

I have just purchase a Intertan 300 in one electronic project lab.
As a beginner it leads you a to the first project which you have all the parts in one bag.

In that bag i have transistors 5 pnp (axxx) and 5 npn and I am not sure how to tell the difference between the 2.

On the flat surface one as a number c1740 and underneat it it has ,
s r c and the - over the c.

The other one have the number a933 and the letters s r a and the a has the - over it. Can someone let me know how which one is which.
Please Advise thanks Paul.

 

[audioguru]

Hi Frenchy,
www.google.com on the internet is where you can find lots of information.
Try searching for 2sc1740 and 2sa933. They have a Japanese numbering system.

 

[Dean Huster]

It's been a long time since I've worked with Japanese transistors, but aren't 2SAxxxx numbers always PNP, 2SBxxxx numbers always NPN and 2SCxxx and 2SDxxxx a bit up for grabs, taking in FETs, SCRs, and such as well?

Dean

 

[TheOne]

2SA - PNP HF
2SB - PNP LF
2SC - NPN HF
2SD - NPN LF