Arizona Advanced Packaging & TestAmkor Technology—Amkor announces Phase 2 expansion to $12 billion as customer demand surpasses initial capacityArizona Advanced Packaging & TestAmkor Technology—Amkor acquires 67-acre adjacent parcel for Phase 2 campus expansionArizona Advanced Packaging & TestAmkor Technology—TSMC and Amkor establish 10-year partnership for U.S. advanced packaging

Amkor Technology

OSAT advanced packaging assembly test

USpublicest. 1968amkor.com (opens amkor.com)Checked 11 Oct

The brief

Analyst view
  • $12 billion two-phase campus in Peoria, Arizona; investment increased in September 2026.
  • Phase 1 (33,000 sqm) mid-2027, production early 2028. Phase 2 (60,000 sqm) late 2027–end 2029.
  • 10-year TSMC partnership supplies wafers. Apple and Nvidia anchor customers. CoWoS for AI, HPC.

Technical approach

As reported
Advanced Packaging

Chiplet and interconnect

CoWoS, bumping, multi-die assembly for high-performance computing and AI.

Test Services

Wafer and package test

Comprehensive testing from sort to final package for quality and reliability.

U.S. Manufacturing

Domestic OSAT ecosystem

Arizona campus serves U.S., allies; reduces Taiwan, SE Asia reliance.

Primer