&gt; we have some hardware that requires 800mA at peak to run. Even many 1A USB supplies<p>I&#x27;ve been doing this for 30 years now. My rule is. Power supplies? Derate by 50% or you will be sorry. That power IC that says it&#x27;s good for 1.2A? Yeah read that as 600ma.<p>Capacitors are the same way, rated for 16 volts? Try 10 volts. If you look at capacitors specs you&#x27;ll often see MTBF at rated voltage and temperature of 2000 hours which is three months.