Hard drive with metal casing and ground pin standoff to reduce ESD damage to stacked PCBA's
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United States of America Patent
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Aug 3, 2010
Grant Date -
Aug 2, 2007
app pub date -
Mar 29, 2007
filing date -
Jan 6, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A case-grounded flash-memory drive has a printed-circuit board assembly (PCBA) with flash-memory chips and a controller chip. The PCBA is encased inside an upper case and a lower case, with a Serial AT-Attachment (SATA) connector that fits through an opening between the cases. The cases can be assembled with the PCBA by a screw-together or thermal-bond adhesive method. Triple-axis case-grounding tabs draw any electro-static-discharges (ESD) current off the upper case along a primary axis and onto a PCBA ground through a secondary axis that is screwed into the PCBA. An intermediary axis between the primary and secondary axes fits around a PCBA notch while the secondary axis passes through a metalized alignment hole on the PCBA for grounding. When the SATA connector is inserted into a host, the host ground sinks ESD currents collected by the triple-axis case-grounding tabs.
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