Aehr Test Systems diligence pack

What they do

• Wafer-level burn-in test systems, used heavily for SiC devices.
• Primary segment: Equipment (Back End) / Test Equipment.
• Key products in the dataset: wafer-level burn-in.
• Market position in that segment: niche.

Role in the chain

• Aehr Test Systems is a market niche in Equipment (Back End) (Test Equipment), headquartered in United States. Wafer-level burn-in test systems, used heavily for SiC devices.
• Ask: On the step you actually buy, is this company the process owner, a second source, or a distributor? The segment label is not a substitute for that answer.

Counterparties on the graph

• Tracked suppliers: 0. Tracked customers: 7.
• Named customers (first 7): Samsung Electronics, SK hynix, TSMC, GlobalFoundries, Intel, Micron Technology, SMIC.
• Ask: Which of those edges are in a filing or a primary-source quote, and which are segment-inferred? Do not treat the two as the same fact.

Concentration and replaceability

Operator section

• None of the tracked suppliers are labelled monopoly or leader in this dataset.
• Ask: If the named monopoly or leader supplier stopped shipping, is there a qualified second source on that process step? If the dataset does not name one, do not assume one exists.

Geography and jurisdiction

• Headquarters country in the dataset: United States.
• Ask: Where do the fabs, plants or logistics nodes actually sit, versus the HQ country on this record? This dataset records headquarters, not every site.

Public-markets facts (only what is on the record)

Investor section

• Public company, ticker NASDAQ:AEHR. A live market cap is on the company profile; this pack does not restate it as a diligence conclusion.
• Ask: What does the latest reported period (if any) say about capacity, backlog and customer concentration? If the company page has no revenue figure, that number is not in this dataset.

Operator checklist

Operator section

• Ask: The dataset names 7 tracked customers for Aehr Test Systems. How concentrated is demand among those names, and which of them have a documented second source in this graph?
• Ask: Aehr Test Systems is headquartered in United States. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
• Ask: Aehr Test Systems trades as NASDAQ:AEHR. What does the latest reported period say about capacity and backlog versus the graph position above?
• Ask: Before treating any edge as a verified relationship, check the provenance labels on the company page and the method note at /methodology.

Investor checklist

Investor section

• Ask: Is the graph position (monopoly / leader / major / challenger / niche) the thing you are underwriting, or a product line the one-liner does not cover?
• Ask: Which named customers in this graph could switch, and which named suppliers could not be replaced in a year? Count only names this dataset actually lists.
• Ask: What is not in this dataset — site-level capacity, contract terms, revenue split by customer — that you still need from a filing or a call?