The component you cannot source is the one that shuts the line. Obsolescence is not a procurement anomaly — it is a structural condition of modern electronics, arriving on schedule and following predictable patterns. To be clear about scope: Kronix Silicon is a sourcing and distribution partner, not a semiconductor fab. We do not extend a part’s production life at a foundry; we manage its supply lifecycle so your production does not stop.
Why Obsolescence Pressure Is Intensifying
The global semiconductor and passive-component ecosystem is contracting its product portfolios. Lifecycle compression — the shortening interval between introduction, peak production, and end-of-life — is now a structural feature. Legacy process nodes are retired, narrow-margin discretes are discontinued, and long-standing industrial lines are consolidated into fewer SKUs.
For long-lived systems — industrial automation, telecom infrastructure, energy systems — that means a fielded product can outlive several of its own components.
The Four Stages of Managed Obsolescence
1. Detection
Receive and log end-of-life notifications from authorised distributors, track lifecycle status across the active BOM, and flag components entering the last-time-buy window. This needs active distribution relationships, not passive monitoring.
2. Assessment
Which lines carry the affected component? What is the historical lead time? Are buffer-stock positions adequate? For environments where substitution carries a qualification obligation, this is where the real work lives.
3. Substitution research
Parametric equivalence on a datasheet is not qualified equivalence in a fielded system. Substitution research needs verified provenance and a qualification pathway defined before it is needed.
4. Inventory positioning
Strategic last-time-buy ahead of end-of-life dates — with capital discipline, storage-condition management, and lot traceability that will still be intact years later when the stock is consumed.
Last-Time-Buys, Done Properly
A last-time-buy is only as good as the documentation behind it. A part that arrives in a facility five years after procurement must arrive with a complete, verifiable chain of custody. Our Obsolescence Management and Inventory & Stocking Programmes services are built around exactly this discipline.
Honesty About What Can and Cannot Be Sourced
The most useful thing a sourcing partner can say is sometimes “this part genuinely cannot be sourced.” We do not substitute without telling you, and we do not route obsolete-part demand to the grey market. Where legacy sourcing is possible, it is traceable; see Traceability & Compliance.
What It Costs — Honestly
Obsolescence and last-time-buy programmes are quoted per requirement — there is no flat published rate, because prices depend on the part, the volume, the lead time, and the supply situation. We quote against your real BOM and the real market, never an invented figure.
Frequently Asked Questions
What is a last-time-buy?
A final, planned purchase of a component ahead of its end-of-life date, sized to cover the remaining service life of the systems that use it — stocked and documented for later consumption.
Can you source already-obsolete parts?
Often yes, through traceable legacy sourcing — with honesty when a part genuinely cannot be found rather than a silent substitution.
Do you fabricate replacement parts?
No. We are a sourcing and distribution partner, not a fab. We manage the supply lifecycle; we do not manufacture chips.
Request a sourcing quote — or discuss a supply programme: +233 20 531 3333.
See also: Obsolescence Management.