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?

Tokyo Electron, Advantest, Teradyne, DISCO and BE Semiconductor Industries 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.

ASE Technology supply chain risk

As of 2026-09-05, 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 Tokyo Electron, Advantest and Teradyne. ASE Technology itself carries a supply-chain criticality score of 81/100, with 235 tracked companies downstream of it.

Data as of 2026-09-05 · 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

Tokyo Electron — leader in Deposition, Japan criticality 83/100
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
Mitsui High-tec — leader in Packaging Materials (Leadframes, Bonding Wire), Japan criticality 82/100
TOWA — leader in Assembly & Packaging Equipment, Japan criticality 82/100

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

Supplier	Segment	Position	Country	Criticality
Tokyo Electron	Deposition	leader	Japan	83/100
Advantest	Test Equipment	leader	Japan	82/100
Teradyne	Test Equipment	leader	United States	81/100
DISCO	Assembly & Packaging Equipment	leader	Japan	81/100
BE Semiconductor Industries	Bonders	leader	Netherlands	81/100
ASMPT	Assembly & Packaging Equipment	leader	Singapore	82/100
Kulicke & Soffa	Bonders	leader	Singapore	82/100
Mitsui High-tec	Packaging Materials (Leadframes, Bonding Wire)	leader	Japan	82/100
TOWA	Assembly & Packaging Equipment	leader	Japan	82/100
Chroma ATE	Test Equipment	major	Taiwan	68/100
Nordson	Test Equipment	major	United States	68/100
Sumitomo Metal Mining	Packaging Materials (Leadframes, Bonding Wire)	major	Japan	68/100
Tokyo Seimitsu (Accretech)	Assembly & Packaging Equipment	major	Japan	68/100
Cohu	Test Equipment	major	United States	69/100
Chang Wah Technology	Packaging Materials (Leadframes, Bonding Wire)	major	Taiwan	69/100
SUSS MicroTec	Assembly & Packaging Equipment	major	Germany	69/100
Tanaka Precious Metals	Packaging Materials (Leadframes, Bonding Wire)	major	Japan	69/100
Hangzhou Changchuan Technology	Test Equipment	challenger	China	57/100
Deca Technologies	Advanced Packaging Services	challenger	United States	58/100
Evatec	Deposition	niche	Switzerland	50/100

Downstream exposure

Criticality score: 81/100
Companies downstream of ASE Technology: 235
Tracked market cap downstream (priced companies only): $34.59T across 149 priced companies

Cite as: wafergraph, “ASE Technology supply chain risk — 20 suppliers, single-source exposure & criticality”, https://wafergraph.com/supply-chain-risk/ase (data as of 2026-09-05).

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