 Alumina
Watlow's thick film heaters on alumina provide superior thermal characteristics, small heater profile, chemical compatibility and ultra-pure materials. These heaters can be designed with multiple circuits and ramp rates up to 40°C (104°F) per second depending on the application details. Thick film on alumina is capable of high operating reliability at temperatures of 500°C (932°F).
Alumina, a widely used semiconductor material due to availability, relatively low cost and stable physical properties, is a well established material for use in demanding semiconductor applications. It is relatively easy to fabricate into a range of shapes while retaining strength at high temperatures. It is available in purity levels of 96 percent.
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