Safety distance for wafer heating

Sat, 25 Jul 2026 02:24:05 +0800

Stopping the Nightmare of Secondary Contamination in Wafer Heating

When you’re pushing high-load production, a burnt-out infrared lamp is a headache. But it’s not just about the downtime. The real nightmare happens when a quartz tube bursts. Suddenly, you’ve got glass shards and chemical gunk raining down on your wafers. That’s secondary contamination, and it can ruin an entire batch in seconds. We build our heating systems specifically to make sure that doesn’t happen.

Finding the Sweet Spot: Distance and Heat

There’s always a tug-of-war between heat density and safety. You want the lamp close to the wafer to get that intense heat, but if it’s too close, thermal expansion can cause the tube to actually touch the workpiece. We don’t guess on this. We calculate the safety gap based on the wattage and tube diameter so there’s always a reliable buffer zone. Then there’s the hardware. High-wattage lamps get incredibly hot—hot enough to warp mounting brackets if they aren’t tough enough. We use materials that don’t expand much when they heat up, which keeps the lamp centered and steady. And a quick tip: keep an eye on your cooling. If your system can’t handle the ambient heat, your tubes will burn out way faster, and that’s when the risk of a burst goes through the roof.

Safety on Primary Warm IR Heat Source

Safety distance for wafer heating

Stopping the Nightmare of Secondary Contamination in Wafer Heating

Finding the Sweet Spot: Distance and Heat