Electronics companies disestablished in 2018

thumb|right|upright=1.1|HGST's Fujisawa plant, expanded from IBM Fujisawa#Fujisawa manufacturing|IBM's Fujisawa plant HGST, Inc. (Hitachi Global Storage Technologies) was a manufacturer of hard disk drives, solid-state drives, and external storage products and services.

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Microsemi Corporation was an Aliso Viejo, California-based provider of semiconductor and system solutions for aerospace & defense, communications, data center and industrial markets.