A professional who tends furnaces that diffuse chemicals into semiconductor wafer surface to alter electrical characteristics of wafer or to protect wafer surfaces. Respnsibilities include:

• Places semiconductor wafers in containers, such as boat or cassette, using vacuum wand or tweezers.
• Places loaded container on furnace loader, such as conveyor, track, sled, or tube.
• Pushes button to advance wafer containers into furnace or pushes wafer container into furnace tube, using quartz rod.
• Pushes buttons or keys commands on control panel keyboard to activate furnace diffusion cycle.
• Observes gauges and meters to verify that furnace gases and temperature meet specifications.
• Maintains production records.
• Turns dials to adjust furnace gases and temperature, if required.
• May clean semiconductor wafers, using cleaning equipment, to remove contaminants prior to diffusion.
• May test and inspect wafer, using testing equipment, to measure resistivity and thickness.