Ok will do, but can someone tell me the difference about the ones that looks like this with the black end:
http://www.tme.eu/katalog_pics/4/5/a/45a68b637247a857036ee20993395ff4/2n3904.jpg
And this one with a silver end:
http://rocky.digikey.com/weblib/ST%20Micro/Web%20Photos/New%20Photos/TO-18.jpg
And how do you know which pin is the neg, pos?