Keeping it Clean: Heating in Class 100 Cleanrooms
If you’re running a Class 100 cleanroom, you already know the nightmare. One stray speck of dust or a tiny bit of gas leaking out during a heating cycle, and your whole batch is trash. Most standard infrared lamps just aren’t cut out for this. Their coatings tend to flake off, or the adhesives start off-gassing the second they hit peak temperature. It’s a disaster for your yield. We handle this by sticking to high-purity synthetic quartz and materials that actually play nice with a vacuum. The secret is in the quartz. We use fused silica with almost zero impurities. Why? Because we want to make sure the lamp isn’t shedding particles onto your work. In a vacuum, the materials you pick are everything. We’ve stripped out the organic binders and resins you usually find in cheaper lamps—the stuff that normally “burns off” during those first few runs. That means no weird smoke, no film buildup, and no ruined semiconductor wafers or optical lenses. Built for the void. Our lamps are designed to handle the pressure of a vacuum chamber without breaking a sweat. We use specialized electrodes and high-grade quartz-to-metal seals to keep things airtight. You won’t find any cheap glues here. Every single joint is either mechanically locked or thermally fused. We also kept the design simple. No weird nooks or “dead zones” where dust can hide. Plus, we polish the surface to a mirror finish. It makes your life a lot easier when it’s time to wipe down the assembly during maintenance. Just a few things to keep in mind… High-purity quartz gives you that clean, short-wave IR radiation, but it’s delicate. First off,**don’t touch the tubes with your bare hands.**The oils from your skin create hot spots, and that’s a fast track to a cracked tube. Also, because we’ve removed all the protective “fluff” and industrial coatings, these lamps are more sensitive to thermal shock. You can’t just slam the power on. Ramp it up slowly. And a pro tip: use high-temp leads and make sure your vacuum pump is beefy enough to handle the initial heat-up phase. Do that, and you’re golden.