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Author: search.filters.author.Afzulpurkar, NitinSubject: search.filters.subject.Rework

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    The simulation of solder bridging on TuMR magnetic head connector
    (2012-03-16)
    Roajanasiri, Reangroaj
    ;
    Afzulpurkar, Nitin
    ;
    Boonsang, Siridech
    The Hard Disk Drive is the important components in the present computer. The Hard Disk Drive manufacturing need high productivity and cost improvement to support the market needs. Many cost reduction are done on product design, material cost and manufacturing operation. This work shows an idea to improve productivity and also reduce the scrap cost by rework process. The product performance will be considered to prevent the reduction of reliability and degradation. © (2012) Trans Tech Publications, Switzerland.
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    A solder bridging rework study and an experimental investigation of the TuMR magnetic head
    (2012-01-01)
    Roajanasiri, Reangroaj
    ;
    Afzulpurkar, Nitin
    ;
    Boonsang, Siridech
    The TuMR reader was designed with high sensitivity for high areal density magnetic recording in the hard disk drive. The assembly process requires the use of solder jet welding on small connectors in the head circuit. The solder bridging problem is the cause of the major mechanical yield loss. This work considers how to resolve the bridging problem without degrading the TuMR sensor by examining the use of Nd:YAG laser reheating. The use of double laser pulses yields better results than the use of single pulses. The critical parameters of the TuMR sensor are monitored with the Quasi tester. © IEICE 2012.