Thanks for your replies.
First of all, of course I googled, of course I found thousands of sites. BUT, my questions was not, "what is it?" but, how do I find one. Probably I should have been more clear about that, but if I google it, I get definitions, not parts I could buy. If I enter it in ebay, i get nothing. At the moment, to me it looks like I have to look for capacitors, then open their datasheet and look for the inductance. So I hoped, someone could probably point out, that all "xy" capacitors, or all with a X in the beginning or something like that could help me find out. Once again, I know what it is and I googled it, I was just looking for one especially.
Oh and to all the guys out there who keep screaming "you could have just googled that", please note; for us non-english speaking people, it is MUCH more an effort to write a correct question into a forum than just google it. Think about that.