"CRYSTAL SLICER"
Job Description and Jobs
Job Description:
- 1) Operates precision saws to slice wafers from semiconductor crystal ingots, such as silicon or gallium arsenide: Attaches mounted crystal to holding fixture of automatic feed on saw, using clamps.
- 2) Adjusts saw controls to set speed and angle of saw blade, thickness of cut, and angle of holding fixture.
- 3) Operates saw to cut sample wafer from crystal ingot.
- 4) Measures crystal orientation of sample wafer, using x-ray machine, and measures thickness of sample wafer, using calipers or thickness gauge.
- 5) Inspects sample wafer for flaws, such as saw marks, chips, bow, and taper.
- 6) Readjusts saw controls based on measurements and inspection.
- 7) Starts saw and observes operation of saw to ensure wafers are sliced according to specifications.
- 8) Removes sliced wafers from saw and cleans wafers in sink or ultrasonic cleaner.
- 9) May mount crystal ingot to mounting block.
- 10) May be designated according to type of saw operated as V-Block Saw Operator; Wire Saw Operator.
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DOT: 677.382-018
Job Number: 2556