On the lithography floor, soft bake temperature uniformity isn’t a nice-to-have. It’s a yield gate. A 1°C drift across the wafer will throw off CD control and start pulling photoresist defects. We built our cleanroom IR oven heaters to kill that variability at the source. What matters, technically Short-wave infrared elements hit the wafer with rapid, direct-coupled heat, so the setpoint settles in seconds. Wafer-plane uniformity stays within ±0.1°C across the bake zone, and repeatability stays locked inside tight thermal budgets. The heater body is built for Class 1–100 cleanrooms, with sealed joints and no exposed filaments to keep particle generation off the floor. Output holds steady over 5,000+ hours, with less than 5% intensity drift. Photoresist processing doesn’t forgive sloppy thermal control. Our IR heaters match the profile you need for both soft bake and hard bake, then cool down fast so cycle time drops and throughput moves. Energy use falls because you’re heating the wafer itself, not the chamber walls. The payoff shows up as fewer rework lots, tighter CD distribution, and bake performance you can count on shift after shift. Here’s what to plan for on install: match your oven port geometry and power feed. We provide interface drawings and calibration curves to make the integration straightforward. Make sure you’ve got cleanroom-rated electrical termination and verify clearances for wafer handling robotics. The heaters are compatible with SECS/GEM hosts, but if you want recipe-based bake profiles instead of fixed-temperature operation, you’ll need a dedicated controller.