Tungsten filament quartz lamp

Tue, 23 Jun 2026 01:30:59 +0800

Out on the fab floor, a 0.1°C drift in bake temperature shifts the photoresist profile by nanometers—and that shift shows up on the yield sheet. In lithography, the thermal budget isn’t optional; it’s the boundary condition. We built our tungsten filament quartz lamps to respect that boundary, delivering repeatable heat where the process demands exact repeatability. Here’s the core of it. The short-wave infrared energy comes from a tungsten filament inside high-purity quartz, giving you fast, radiant heating with tight spectral control. Across the hot zone, wafer-level uniformity holds at ±0.1°C, and the temperature setpoint tracks with sub-second response. The envelope is engineered for cleanroom Class 1–100 operation, using materials chosen to keep particle generation at zero and contamination off the table. These units run 24/7; we’ve seen them operate past 5,000 hours with less than 5% output drop. And it matters where it counts—at the bake station. Soft bake and hard bake set the photoresist solvent profile and adhesion. Too cool, and the film traps solvent. Too hot, and the profile compresses. Our lamps hold the bake window steady, so critical dimension control and sidewall angle stay within spec, cycle after cycle. The payoff is predictable overlay, less scrap, and fewer rework lots. You also save energy because the transfer is radiant and efficient, and longer lamp life stretches replacement intervals, which trims planned downtime. Installation is straightforward, but you still need to be deliberate. Match the lamp to the reflector geometry and the thermal controller’s PID setpoint to avoid hot spots. Check voltage and connector compatibility with the OEM oven or coater track, and make sure the exhaust path is clean and dry. Treat the quartz like a process chamber. Use gloves, keep it fingerprint-free, and validate the bake profile with a calibrated wafer before releasing the lot.

Filament on Cozy Infrared Home Heating

Tungsten filament quartz lamp