> Hi Folks, > Does anyone have a reference for what is considered the standard = "Automotive 12VDC" supply ... i.e. what range of voltages/ spikes/ noise a = piece of equipment powered by a typical car will have to cope with? > I'm not terribly familiar with any other ICs for this purpose, but I=20 love how well the LT4356-1 "Surge Stopper" has worked out for me in this=20 regard. 4V to 80V operational range, 125 degC, external FET, programmable=20 (resistors) clamping voltage and similarly programmable timers for=20 shutdown and rearm. Darron Black --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .