This is a little off the normal Technet topic genre, but I was wondering if 
anyone out there may have some data on how long a resistor can withstand 
overcurrent before it changes resistance / fuses open? I'm taling about a 
standard 0805 carbon film resistor, for example 100 ohms:

at 1 mA it drops 100 mV and dissipates 100 uW, no big deal for a 125 mW 
device

at 10 mA it drops 1 V and dissipates 10 mW, still no big deal

at 100 mA it drops 10 V and dissipates 1 W, until the resistance increases 
dramatically

How much of a time duration can the device withstand at 100 mA? Is there a 
correlation between overload and time?

The graph in http://www.koaspeer.com/pdfs/Thick_Film_Pulse_Limitation.pdf 
seems to indicate that an 0805 (2A on the graph) can dissipate 1.5 W for 1 
second. Does this make sense?

Thanks,

Blair

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