It's a ceramic resonator with built-in capacitors. My favorite supplier is murata. Check out their "resonator search" at http://www.murata.co.jp/search/ic-e.html . You put in the chip you're using and it tells you which resonator to use. Harold On Tue, 28 Mar 2000 09:52:10 -0600 Giles writes: > Hello all, I am once again back on the PicList. > OK, I am looking at someone else's board. I see a yellow 3 pin > thing in place of the xtal. It looks to me like the center pin is > tied to ground and the other 2 are going to OSC1 & OSC2. > I love to reduce part count and want to know what this is.. It > looks like a tantalum cap with 3 pins and has 4.00u on it, my guess > is it is 4.0Mhz. > Is it RC? or Xtal with caps built in? Who sells them, who is the > mfg? > > Best regards, > Giles > > FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - there's no risk! For your FREE software, visit: http://dl.www.juno.com/get/tagj.