Title :
An investigation of ESD protection for magnetoresistive heads
Author :
Cheung, Tim ; Rice, Alan
Author_Institution :
Appl. Magnetics Corp., Goleta, CA, USA
Abstract :
Many precautions are taken to avoid damaging electrostatic discharge (ESD) through disk drive magnetic recording heads featuring readback via a magnetoresistive (MR) sensor. By optimizing protective spark-gaps (PSG) in the recording head, the extent of ESD damage can be reduced. Human Body Model (HBM), Machine Model (MM) and Charged Device Model (CDM) transients are applied to simulated soft-adjacent-layer (SAL)-biased MR heads with and without protective spark-gaps. Design principles for ESD-damage-suppressing spark-gaps in MR heads are developed and several implementations compared.
Keywords :
electrostatic discharge; equivalent circuits; magnetic heads; magnetoresistive devices; modelling; protection; spark gaps; transients; ESD damage reduction; ESD protection; charged device model; disk drive heads; electrostatic discharge; human body model; machine model; magnetic recording heads; magnetoresistive heads; magnetoresistive sensor; protective spark-gaps; soft-adjacent-layer-biased MR heads; transients; Circuit modeling; Electrostatic discharges; Equivalent circuits; Magnetic heads; Magnetoresistive devices; Protection; Spark gaps;
Conference_Titel :
Electrical Overstress/Electrostatic Discharge Symposium, 1996. Proceedings
Print_ISBN :
1-878303-69-4
DOI :
10.1109/EOSESD.1996.865119
