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Development of New Electroplating Alloy (Au-Cu) for Increasing the Durability of PCB Commutator in Vibration Motor  

Kim, Young-Tae (MD Division, Samsung Electro-Mechanics Co.)
Lee, Sung-Jae (Central R&D Institute, Samsung Electro-Mechanics Co.)
Park, Sung-Jun (Department of Mechanical Engineering, Chungju National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.6, 2009 , pp. 114-121 More about this Journal
Abstract
Mobile phone is a representative personal communication tool among wireless communication devices. Recently, with the miniaturization and light-weight trend of mobile phone, the vibration motor has been replaced by coin type. The required performances of coin type vibration motor needed by user are long life, higher vibration, and thin thickness. Also the most important factor determines the performance of vibration motor is long-term reliability, which is mainly related to PCB plating technique for commutator. In this study, three types of fault were categorized to analyze the cause for malfunction of vibration motor. And, hardness and surface morphology on plating surface are also investigated to optimize the plating method and plating conditions. As a result, new plating method and conditions were proposed to increase the durability of PCB commutator.
Keywords
Commutator; Printed Circuit Board (PCB); Vibration Motor; Electroplating;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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