Fab assembly workshop heater

Wed, 24 Jun 2026 01:14:20 +0800

On the fab floor, that hot plate temperature curve isn’t just heating a wafer—it’s defining your process window. A couple degrees drift during soft bake or hard bake is enough to move critical dimensions, tilt sidewall angles, and push yield right off spec. Our fab assembly workshop heater was built around wafer-level thermal uniformity, holding ±0.1°C across the substrate so the photoresist profile stays stable through lithography and into etch. What matters under the hood We pair quartz-halogen short-wave emitters with a low-thermal-mass heater block, so ramps are fast and repeatable. The control loop reads off calibrated sensors mapped to the wafer plane, not the heater body—so the setpoint tracks what the wafer actually sees. It fits Class 1–100 cleanroom constraints, generates zero particles (verified in-situ), and keeps running 24/7 without unplanned downtime. Output repeatability stays within 0.2% over 5,000+ hours, so the thermal budget stays consistent lot to lot. Why it holds up in assembly and bake In bake stations, you need the same profile every time: soft bake to pull out solvents, hard bake to harden the mask. Overshoot can cause skin formation; undershoot leaves residues. This heater keeps the bake curve on target, cuts scrap, and tightens cycle time by trimming stabilization waits. Power draw is matched to the thermal load, so you lower operating cost without giving up ramp rate. A few practical notes The unit needs a dedicated, shielded power feed and a clean, dry utility feed—otherwise uniformity drifts. Swapping connectors in the field can shift calibration by a few tenths of a degree. Plan the install around the tool footprint, and confirm bake recipe mapping before you release. We supply a calibration map and recipe templates for soft bake and hard bake, but integration still comes down to matching the wafer stack and the chamber environment.

Assembly on Your Quartz Heater Source

Fab assembly workshop heater