6 ms·
As others have noted, yes. It definitely impacts things. Semiconductor evaluation includes a significant time spent on long life expectancy (look up HTOL, or B
by Kirby64 7y ago
As others have noted, yes. It definitely impacts things. Semiconductor evaluation includes a significant time spent on long life expectancy (look up HTOL, or BHAST testing). HTOL and BHAST aren't just to evaluate for thermal stress (in fact, generally, there's ramp rates associated with the temperature changes to make sure you don't thermally shock something). They do it because diffusion, electromigration, etc, get much worse at higher bias voltages and high temperatures.
This was significantly less of an issue on older stuff (or on stuff that is run on really large nodes, which tends to be older), since you have to diffuse a LOT more material to actually cause problems compared to the 7nm stuff today.