Wafer fab and electronics assembly equipment, lithography tools, etchers, CVD/PVD chambers, vacuum systems, SMT lines, and reflow ovens.
Fab equipment operates under cleanliness and tolerance requirements that are several orders of magnitude tighter than any other industry. A routine repair can contaminate a chamber and destroy weeks of production. Maintenance procedures in this category are more formalized than anywhere else in manufacturing for good reason.
Chamber performance drift is usually a vacuum leak. Helium leak detection is how you find them. Start with the fittings you touched most recently (a leak that appeared after a service action is almost always at the service action). If nothing shows, move on to the stationary fittings. The leak rate spec for process vacuum is very tight, and even a small leak matters.
Mass flow controllers drift over time. An MFC that is reading the wrong flow will give you process drift that looks like a recipe problem or a chamber contamination problem. Calibrate MFCs on a schedule. When replacing an MFC, verify the flow with an external reference before returning the tool to production.
Plasma tools have a match network that tunes RF power into the chamber.
Fab chemistries include some of the most hazardous materials used in any industry. Hydrofluoric acid. Silane. Ammonia. Arsine. Phosphine. Even trace exposures can injure or kill. Never work on chemistry systems without facility-specific training, proper PPE, and the emergency procedures you have practiced. The SDS is not enough by itself.
ASML
Wafer Lithography / Stepper for Semiconductor production
Lam Research
Plasma Etch System for Semiconductor production
Applied Materials
CVD / Deposition System for Semiconductor production
Fuji
SMT Pick-and-Place for Semiconductor production
Heller Industries
Reflow / Wave Solder Oven for Semiconductor production
Koh Young
AOI / X-Ray Inspection for Semiconductor production
Deeper explainers and background reading for technicians working in semiconductor & electronics.
Electrical faults cause 30% of unplanned downtime. This systematic fault finding guide, visual inspection → voltage checks → component isolation → testing, helps you diagnose faults in minutes, not hours.
Preventive maintenance replaces the 'run it until it breaks' approach with scheduled inspections and part replacements. Plants that run a solid PM program see 25-30% fewer emergency work orders within the first year. Here is how to build one that sticks.
Predictive maintenance uses sensor data to spot problems before they cause downtime. A vibration sensor catching a bearing defect two weeks early costs you a $200 part swap instead of a $15,000 emergency rebuild. This guide explains the tech, the math, and where to start.
Misalignment is the second leading cause of rotating equipment failure after lubrication problems. Laser alignment takes 30 minutes and prevents months of accelerated wear on bearings, seals, and couplings. This guide covers the basics of angular and offset misalignment correction.
Images on this page sourced from Freepik. Credits: hujur1100, subinpumsom, tharathip, czdistagon, igterex, Andrei Armiagov, mediaphotos.
