ASE Technology supply chain risk

As of 2026-10-09, ASE Technology depends on 20 tracked suppliers headquartered in 8 countries (8 of them in Japan). 9 of those suppliers hold a monopoly or leader position in their own segment, led by Advantest, Teradyne and DISCO. ASE Technology itself carries a supply-chain criticality score of 81/100, with 235 tracked companies downstream of it.

Data as of 2026-10-09 · suppliers are the curated key_supplier edges in the wafergraph dataset (researched or segment-inferred — see /methodology) · criticality is the graph-derived chokepoint score, 0–100

Dominant and single-source suppliers

  • Advantest — leader in Test Equipment, Japan criticality 82/100
  • Teradyne — leader in Test Equipment, United States criticality 81/100
  • DISCO — leader in Assembly & Packaging Equipment, Japan criticality 81/100
  • BE Semiconductor Industries — leader in Bonders, Netherlands criticality 81/100
  • ASMPT — leader in Assembly & Packaging Equipment, Singapore criticality 82/100
  • Kulicke & Soffa — leader in Bonders, Singapore criticality 82/100
  • TOWA — leader in Assembly & Packaging Equipment, Japan criticality 82/100
  • Mitsui High-tec — leader in Packaging Materials (Leadframes, Bonding Wire), Japan criticality 82/100
  • Tokyo Electron — leader in Deposition, Japan criticality 83/100

A monopoly or leader supplier is the hardest to replace. These are the edges to watch first.

Suppliers by country

  • Japan — 8 suppliers (40%)
  • United States — 4 suppliers (20%)
  • Singapore — 2 suppliers (10%)
  • Taiwan — 2 suppliers (10%)
  • Netherlands — 1 supplier (5%)
  • Germany — 1 supplier (5%)
  • China — 1 supplier (5%)
  • Switzerland — 1 supplier (5%)

All 20 tracked suppliers

Downstream exposure

  • Criticality score: 81/100
  • Companies downstream of ASE Technology: 235
  • Tracked market cap downstream (priced companies only): $35.95T across 147 priced companies
Frequently asked questions3
How many suppliers does ASE Technology have?
wafergraph tracks 20 key suppliers for ASE Technology, across 8 countries.
Which of ASE Technology's suppliers are single-source risks?
Advantest, Teradyne, DISCO, BE Semiconductor Industries and ASMPT hold monopoly or leader positions in their segments, which makes them the hardest suppliers for ASE Technology to replace.
What is ASE Technology's supply-chain criticality score?
ASE Technology scores 81/100 on wafergraph's chokepoint criticality index, with 235 tracked companies downstream.

Cite as: wafergraph, “ASE Technology supply chain risk — 20 suppliers, single-source exposure & criticality”, https://wafergraph.com/supply-chain-risk/ase (data as of 2026-10-09).

Open ASE Technology's supplier graph →

Track the chain

What moved in the semiconductor supply chain — This Week in the Chain, the free weekly wafergraph briefing.

Subscribe to the free weekly briefing →

Free · no login · 615 companies, updated weekly