HDD-level electrostatic discharge (ESD) failure voltage of tunneling magnetoresisive (TMR) heads

Author

Jang, Eunkyu

Author_Institution

Samsung Inf. Syst. America, San Jose

fYear

2007

fDate

16-21 Sept. 2007

Abstract

HDD-level electrostatic discharge (ESD) failure voltage of drives equipped with TMR heads and flying height control heaters is measured. An ESD gun is used up to 30 kV to simulate ESD events on the base plate of HDD. In this study, ESD sensitivity of two different types of HDD (Type A and Type B) was studied. The test results showed that the average failure voltage of Type A drive (12 kV) is lower than Type B (21 kV) even though HSA-level ESD failure voltages are similar. Disk, disk damper, write-to-read crosstalk, and location of ground via in suspension interconnect play important roles in ESD sensitivity of the TMR head.

Keywords

disc drives; electrostatic discharge; hard discs; magnetic heads; tunnelling magnetoresistance; ESD failure voltage; HDD-level electrostatic discharge failure voltage; TMR heads; disk damper; flying height control heaters; hard disk drive; tunneling magnetoresisive heads; voltage 12 kV; voltage 21 kV; write-to-read crosstalk; Discrete event simulation; Drives; Electrostatic discharge; Electrostatic measurements; Magnetic heads; Shock absorbers; Temperature control; Testing; Tunneling magnetoresistance; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

29th Electrical Overstress/Electrostatic Discharge Symposium, 2007. EOS/ESD

Conference_Location

Anaheim, CA

Print_ISBN

978-1-58537-136-5

Type

conf

DOI

10.1109/EOSESD.2007.4401745

Filename

4401745