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As you know, the semiconductor industry is hot recently. In fact, we are supporting semiconductor manufacture. At the first impression, you might be surprised that temperature or UV labels are related to semiconductor. This page will reveal your question.
Measuring the surface temperature of silicon wafer
Vacuum condition is important for semiconductor manufacturer because it makes easy to control chemical reactions and helps keeping the manufacturing space clean. If you attach the temperature indicators for vacuums (VL series) on a wafer, you can check the temperature easily even under the vacuum condition.
Before dicing (the process to separate to die from silicon wafer) , silicon wafers are typically mounted on dicing tape which the adhesive bond is broken by exposure to UV light. UV labels can check if the UV light is working correctly.
Manufacturing semiconductors use many kinds of chemical gas and emit a lot of exhaust gas. Temperature labels also can be used in a fan motor of an exhaust emission control system to check abnormal heat.
An image of exhaust emission control system
A part of motor of exhaust emission control system