Title :
Effect of slider conductive adhesive on EMI radiation of hard disk drives
Author :
Jang, Eunkyu ; Choi, Ho-Joong ; Ku, Young-Min
Author_Institution :
HDD R&D, Samsung Inf. Syst. America, San Jose, CA
Abstract :
EMI radiations from hard disk drives are measured outside a computer in a 3 m anechoic chamber. Hard disk drives with two different adhesive materials between the suspension and head slider are compared in EMI radiation level. The average EMI radiation of one type is 52.87 dBmuV/m while that of the other is 46.34 dBmuV/m. The main causes for EMI radiation difference of the two types of drives are investigated in this study. They have different DC resistance, breakdown voltage, and capacitance between the suspension and head slider when used in head gimbal assembly. It was found that the capacitance between slider and suspension is a critical factor for EMI radiation of hard disk drives.
Keywords :
anechoic chambers (electromagnetic); disc drives; electromagnetic interference; hard discs; magnetic recording; DC resistance; EMI radiation; anechoic chamber; breakdown voltage; capacitance; hard disk drives; head gimbal assembly; head slider; slider conductive adhesive; Assembly; Coils; Conductive adhesives; Electromagnetic interference; Frequency; Hard disks; Integrated circuit interconnections; Magnetic heads; Magnetic levitation; Preamplifiers; EMI radiation; common-mode; hard disk drive; magnetic recording;
Conference_Titel :
Electromagnetic Compatibility, 2008. EMC 2008. IEEE International Symposium on
Conference_Location :
Detroit, MI
Print_ISBN :
978-1-4244-1699-8
Electronic_ISBN :
978-1-4244-1698-1
DOI :
10.1109/ISEMC.2008.4652032
