In December 2001, Sanmina merged with SCI Systems of Huntsville, Alabama, for $6 billion in cash, stock, and debt.

[6] Shortly after, Sanmina-SCI bought E-M Solutions, a bankrupt Fremont, California electronics manufacturer, for $110 million in cash.

It serves clients in the fields of communications, computing, multimedia, semiconductors, defense, aerospace, medical applications, and automotive technology.

It provides consulting, design, engineering, logistics, new product introduction, assembly, machining, and fabrication, to produce printed circuit boards, backplanes, electrical cables, injection-molded plastics, enclosures and frames, optics.

[citation needed] In 2023, it became known that Sanmina was engaged in ongoing litigation with its former partner, Dialight, concerning the termination of their manufacturing services agreement.