[5][6][7] TTM's original business was manufacturing printed circuit boards (PCBs) used in routers, switches, servers and memory modules, and its customers included General Electric, Motorola, and Solectron.

[3] In 2002, TTM acquired Honeywell Advanced Circuits, Inc. for US$2 million, gaining a 281,000-square-foot (26,100 m2) factory in Chippewa Falls, Wisconsin (the largest PCB manufacturing facility in the country) and adding customers including Cisco, Sun Microsystems, and IBM.

[4] In 2006, TTM acquired the Tyco Printed Circuit Group for $226 million, expanding its business to specialized PCBs geared to the aerospace and defense sectors.

[4] In 2010, TTM acquired the Hong Kong–headquartered[8] Meadville Printed Circuit Group for $521 million, which expanded the company's footprint in Asia and extended its business to PCBs used in smartphones and tablets.

[10] In 2019, TTM acquired intellectual property assets from i3 Electronics, Inc., citing a particular interest in i3's technology enabling very fine printed lines and spacing down to 25 microns.