Stop Wasting Heat in Your Fab Drying
Let’s be honest: wasting wattage is just throwing money away. Most fabs use standard aluminum reflectors, but here’s the problem—they scatter infrared energy. Instead of hitting the wafer, that heat bleeds right into the machine chassis. It’s inefficient. That’s why we switched to gold-coated reflectors. Why gold? It’s not about the bling. It’s about how gold handles the near-to-mid IR spectrum. While aluminum lets some energy slip through, gold bounces photons right back toward the target. It stops that “wide spray” of heat and turns it into a focused beam. You get more punch on the wafer surface without having to crank up the power supply. Getting the heat where it actually belongs When we design these systems, we’re chasing heat density. By narrowing the beam angle, we can get the wafer up to evaporation temperature a lot faster. It’s the difference between trying to warm a room with a space heater versus using a magnifying glass to start a fire. You aren’t just adding more heat; you’re actually directing it. The catch (because there’s always one) Now, this isn’t a magic fix for everything. Gold is soft. Much softer than anodized aluminum. If your techs go in there with abrasive scrubs during a cleaning cycle, they’ll scratch the surface and kill the reflectivity instantly. You have to be gentle. Stick to non-contact cleaning or very soft cloths to keep that mirror finish intact. What this means for your bottom line At the end of the day, this gives you two choices: you can either drop the wattage on your heating elements or shorten your cycle time. Either way, the cost per wafer goes down. If you’re looking at your energy bills and wondering where the leak is, check your reflectors. If they look clouded, your lamps are working overtime just to keep up. That’s a fast track to filament burnout.