In Microchip's packaging document and also the PIC datasheet (in this case for the 16F884), in the "land patterns" section, the center pad is called "Optional Center Pad" for the QFN packages. Is that really optional? I can't think of any upside for leaving it out. I welcome any thoughts on it. Thanks, Bob --=20 http://www.fastmail.fm - Send your email first class --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .