Hello Ceramic resonators with buit in caps. AVX makes them. PBRC -B, -D series chip resonators David Giles cc: Sent by: pic Subject: Xtal? or RC? microcontroller discussion list 03/28/00 10:52 AM Please respond to pic microcontroller discussion list 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