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Advantest Corporation (6857.T) is the world's largest automatic test equipment (ATE) manufacturer, with roughly 50% global share alongside Teradyne.
Named counterparties identified by open-source research and written only where a primary source states the relationship — never inferred from sector or co-mention. 4 customer-side. This is a partial view: it covers the relationships we could evidence, not the company's full supply base.
Advantest's own press release names Infineon Technologies, \"the world's number one automotive semiconductor supplier,\" as the recipient of its 10,000th V93000 SoC test system, calling Infineon a \"longtime customer.\" No unit volume, revenue, or share-of-Advantest-sales percentage disclosed for Infineon specifically. Re-checked 2026-10-01 (wake-minerals-buyers, step 0.5): source_url still live, still states the claim verbatim -- confirmed, no change.
Advantest's 83rd Annual Securities Report (IFRS, FY2023 = fiscal year ended 2024-03-31), customer-concentration table: Samsung Electronics Co., Ltd. JPY 55,325m / 11.4% of net sales, mainly semiconductor-and-component-test-system and mechatronics segments. The filing's separate Note 6 'Information of Main Customers' cites a broader 'Samsung Group' figure (JPY 57,725m, >=10% threshold) for the same year -- a wider consolidated-group scope than this entity-level row, not a conflicting number.
Same report, FY2024 (fiscal year ended 2025-03-31) column: Samsung Electronics Co., Ltd. JPY 82,795m / 10.6% of net sales. Note 6's broader 'Samsung Group' figure for the same year is JPY 87,734m.
Same report, FY2024 (fiscal year ended 2025-03-31) column: TSMC JPY 96,158m / 12.3% of net sales, mainly semiconductor-and-component-test-system segment -- first year TSMC crosses the 10%-of-sales disclosure threshold (no FY2023 row disclosed, i.e. below 10% that year). Driven by the HBM/HPC test-system demand surge the dossier's own 'What they do' and segment-review text already describes.
Scope. Absence of a counterparty here is not evidence that none exists — most commercial sourcing is confidential and never becomes public. Rows without a share figure mean no share was disclosed, not that the relationship is small.
Every exposure is read as a buyer dependency; the top 3 are its binding chokepoints.
Dossier discloses a neodymium exposure with no Dy/Tb/Sm tag and a sector where doping is not the rule — whether this company's magnets are Dy/Tb-doped is not on record. Resolved by a disclosed magnet grade, or a named magnet supplier in named_counterparties.
A61's suspension (Announcement 70) lapses 10 Nov 2026 — on the plain text, controls revive automatically. The US DoD CN/RU/IR/KP sourcing bar follows 1 Jan 2027. See the underlying extraterritorial export-control action. We supply the provenance file; we never compute your ratio for you.
As a buyer, policy pressure across its consumed materials is rising.
Descriptive trend in official policy actions on this company’s materials — a policy-pressure trend, not a price or trading signal. No forward probability is implied. Direction is measured on actions we have discovered, and discovery lags events: where the recent window is too thin to support a calm reading, the row says coverage-limited instead of easing.
No actions in the register have named or swept this company in the last 24 months.