Vacuum chamber infrared heater

Mon, 08 Jun 2026 02:38:55 +0800

On the fab floor, a 0.5°C drift during the photoresist bake is enough to pull critical dimension (CD) targets off and start bleeding yield. Vacuum chamber infrared heaters are there to take that variability out of soft bake and hard bake—steps where the thermal budget is simply non-negotiable. What matters under the hood Short-wave infrared hits the wafer and chamber surfaces fast, coupling heat directly and cutting down thermal lag. We aim for wafer-level uniformity of ±0.1°C across the process window, and the setpoint repeatability holds up lot after lot. The heater body is built for Class 1–100 cleanroom use, with low-outgassing materials and a finish that keeps particle generation as close to zero as you can get. In vacuum, temperature stays stable even when pressure and gas composition shift—so lithography and etch stacks see a consistent thermal history. Why it sticks in production Soft bake and hard bake set the photoresist profile that drives overlay and CD control. With these infrared heaters, the wafer comes up to temperature quickly, then holds without overshoot—shortening bake cycles and tightening the distribution. The payoff is fewer rework lots, less scrap, and a line-of-sight thermal budget that stays put across product splits. Energy use drops because the heater responds on demand, and reliability is engineered for 24/7 ops. Unplanned downtime goes down not by promise, but by design margin in thermal mass and control loops. The practical bits you need These heaters need solid thermal anchoring and proper radiation shielding to keep uniformity where it should be. Chamber geometry and the emissivity of fixtures can shift the thermal profile, so commissioning means mapping the hot zone and tuning the PID to match your vacuum profile. Plan for cleanroom-compatible service access up front—lamp replacement and calibration are routine, but if the access path isn’t defined, you’ll fight particle counts every time.

Chamber on Cozy Infrared Heating Solutions

Vacuum chamber infrared heater