In this article
Why counterfeits have exploded
Counterfeit semiconductors — parts relabeled, recovered, cloned, or simply empty packages — are estimated at 1–5% of the global open-market supply. Allocation cycles and accelerated obsolescence have made the problem dramatically worse in the past five years.
Most counterfeits originate from parts salvaged from scrapped boards, sometimes re-marked with a higher grade. The risk to your production line is not just a failed board — it is a brand recall, a customer line stop, or worse, a field failure.
Visual red flags
The first stage is visual: pin finish uniformity, marking depth, lead co-planarity, and packaging condition. We reject lots where the laser marking looks fuzzy, the date code is inconsistent, or the lead finish has been re-tinned.
Material analysis with XRF
X-ray fluorescence tells us whether the lead finish is the specified lead-free matte tin, or whether it has been re-processed. We XRF every lot of passives and any high-risk active part.
Decapsulation and die inspection
For parts we cannot conclusively authenticate, we decapsulate — chemically open the package — and inspect the die against the manufacturer's reference images. This is the gold standard for authentication and the single most effective tool against sophisticated counterfeits.
What to require from your supplier
- An incoming inspection report for the lot
- A documented chain of custody
- A specific counterfeit return policy in writing
- Independent inspection when sourcing open-market
Counterfeit risk is not a vendor problem — it is a specification problem. Tell your distributor in writing what you will accept and what you will not, then audit them against that document once a year.
