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SME MS900133
- 3-D Inspection For Quality Control In Surface Mount Manufacturing
- standard by Society of Manufacturing Engineers, 06/01/1990
- Publisher: SME
$9.00$18.00
THIS PAPER DISCUSSES HOW NEW INSTRUMENTATION CAPABLE OF PRODUCING FULL 3-D IMAGES CAN BE USED TO PROVIDE THE REAL TIME HEIGHT OR THICKNESS INFORMATION FOR IMPROVED QUALITY CONTROL DURING THE SURFACE MOUNT MANUFACTURING PROCESS. THE TECHNOLOGY BEHIND LASER BASED 3-D MEASUREMENTS IS FIRST DISCUSSED, FOLLOWED BY A COMPARISON OF VARIOUS CONTACT AND NONCONTACT HEIGHT MEASUREMENT TECHNIQUES. EXAMPLES ARE GIVEN OF A 3-D METROLOGY FOR INSPECTION THICK FILM RESISTORS, SOLDER PASTE, REFLOWED SOLDER, SOLDER MASK, TAPE AUTOMATED BONDING (TAB), IC LEADS, AND CERAMIC PACKAGES. A SPECIFIC EXAMPLE OF YIELD IMPROVEMENTS USING 3-D MEASUREMENTS IS GIVEN.