Temperature sensor for wafer tool

Sun, 12 Jul 2026 05:46:10 +0800

Keeping Things Safe When Using IR Heating for Wafer Cleaning

Let’s be honest: putting infrared lamps inside a tool filled with flammable or explosive cleaning chemicals is a nerve-wracking prospect. One tiny spark or a hairline crack in a lamp housing, and you’re not just looking at a broken tool—you’re looking at a disaster. We deal with this by basically building a fortress around the electrical parts. We use specialized encapsulation and sealing to make sure the chemicals and the electricity never, ever shake hands. The Secret is in the Seal We don’t just wrap the lamp and call it a day. It’s a multi-stage process. First, the lamp goes into a high-purity quartz envelope. Then, we lock everything down with chemically resistant gaskets and specific epoxy resins right where the wires connect. This stops volatile organic compounds (VOCs) from creeping into the electrical connections. We only use materials that can handle aggressive solvents without breaking down or releasing weird gases. It’s about peace of mind. Stopping the Spark In an explosive environment, heat is a concern, but the real enemy is the arc. A single spark is all it takes. That’s why we’re obsessive about the wiring. We make sure no live parts are touching the air. The encapsulation completely swallows the lead-in wires and the solder joints. If there’s no exposed electricity, there’s no spark. Simple as that. The Trade-off Now, here is the catch. When you put a protective layer between the filament and the wafer, you lose a little bit of that raw heat. You’ll notice a slight dip in the radiant heat flux compared to a lamp sitting in open air. It’s not a dealbreaker, though. You just need to tweak your power settings or let the wafer sit for a few seconds longer to hit your target temperature. Real-World Reliability These lamps are built to take a beating. We’ve seen them survive chemical splashes that would short out a standard lamp in seconds. We put every unit through leak tests because we know how brutal thermal cycling is in a semiconductor tool. If a seal fails, the lamp burns out fast. That’s why we care way more about the integrity of that seal than we do about chasing raw wattage. It’s better to have a lamp that works consistently than one that’s slightly hotter but risky.

High temperature thermal tape fab

Thu, 02 Jul 2026 03:17:45 +0800

On the fab floor, temperature drift during wafer drying or photoresist bake isn’t just a blip on the SPC chart. It’s lost yield, plain and simple. We built our high-temperature thermal tape solution around short-wave infrared (NIR) heating, because it delivers stable, fast heat into the substrate without touching it. What matters under the hood NIR energy punches through the wafer and tape stack quickly, so you hit setpoint fast—and stay there. We’re talking ±0.1°C uniformity across the wafer, which directly keeps critical dimensions tight after exposure. The system handles both soft bake and hard bake with strict thermal budget control, so photoresist reflow variability drops off. It’s cleanroom-ready for Class 1–100, with low-particle materials and a design that keeps outgassing low. The heaters run day in, day out at high temperature, and the performance holds up cycle after cycle—thousands of them. Why it fits the process You need drying after clean steps and baking after spin-coating to be repeatable, every single time. NIR gives you heat on demand, so soak time shrinks and energy use drops without giving up uniformity. That means tighter CD control, fewer rework lots, and throughput you can count on. The tape interface stays stable across multiple passes, so thermal contact stays consistent from lot to lot. What to watch for NIR is line-of-sight and doesn’t like gaps. The tape has to maintain even thickness and adhesion across the wafer; otherwise you’ll see local hot spots. Plan for controlled airflow and shielding to keep stray reflections out of the picture. We provide application notes for tape selection and clamping, and I’d recommend running a short qualification to map temperature across the zone before you move to full transfer.

Temperature on Pure Quartz Infrared Heaters

Temperature sensor for wafer tool

Keeping Things Safe When Using IR Heating for Wafer Cleaning

High temperature thermal tape fab