Oli Glaser wrote: > I attached a couple of the Murata charts for anyone interested. They > have some informative app notes on their site too. SFR isn't the only issue. Note that in the top left graph, for example, th= e 100nF cap has lower than or equal impedance over most of its range than the others, even though it has a lower SFR. That all said, I agree there are times when lower value bypass caps are necessary. As I said, I've even used a specific model of 100pF in one case= .. However, the issue was about getting a large quantity of some capacitor. I still think for a hobbyist to get a pile of 0805 1uF caps and then use them in lots of applications, including bypass caps for a microcontroller, makes sense. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .