Out on the line, temperature drift isn’t some academic exercise—it’s yield walking out the door. A soft bake that drifts half a degree throws off...

On the fab floor, a 0.5°C drift during the photoresist bake is enough to shift critical dimensions by nanometers. One bad lot, and you’re scrapping a...

On the fab floor, you can’t afford drift. A 0.3°C shift in the photoresist bake and your critical dimension budget is gone. Yield slips before...