A solder bridging rework study and an experimental investigation of the TuMR magnetic head

IEICE Electronics Express

Nitin Afzulpurkar²  Siridech Boonsang¹  Reangroaj Roajanasiri² 

[1] College of Data Storage Innovation, King Mongkut’s Institute of Technology Ladkrabang;School of Engineering and Technology, Asian Institute of Technology

关键词: TuMR;    HGA;    rework;    bridging;    solder jet welding;   

DOI  :  10.1587/elex.9.1683

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)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.

【 授权许可】

Unknown