A study of head stack assembly sensitivity to ESD

It is well known that both giant magnetoresistive (GMR) and MR head gimbal assemblies (HGAs) are susceptible to damage by electrostatic discharge (ESD) from human body model (HBM) and machine model (MM) transients. What is less well known is the susceptibility of a GMR or MR sensor once the HGA has been wired to the pre-amplifier and becomes part of an HSA… CONTINUE READING