Hi Ceramic chip capacitors are supplied in a range of voltages from 6.3V to hundreds of volts. In decoupling applications, there are rules of thumb to derate the operating voltage of chip caps? I've heard something similar for tantalums (derating factor 0.2-0.3) due to reliability problems. Regards Lucas ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu