Obsolescence Management is the structured process of anticipating and resolving the loss of parts, materials, or software a medical device depends on, before that loss disrupts production or patient supply. Governed by IEC 62402, it spans proactive monitoring, last-time-buy decisions, qualified substitutions, and controlled redesign across the full device lifecycle.
What is Obsolescence Management?
Obsolescence Management treats the moment a required item moves from available to unavailable from its manufacturer. IEC 62402:2019, the international standard maintained by IEC technical committee 56, frames it this way: any item still in use will eventually face obsolescence, showing up as difficulty sourcing parts, spares, or support.
In medical devices, the items at risk are usually electronic components (microcontrollers, sensors, displays), specialty polymers and adhesives, or software dependencies such as an operating system or third-party library. It sits inside lifecycle and sustaining engineering, closely linked to supply-chain risk and a discipline the defense and aerospace sectors call DMSMS (Diminishing Manufacturing Sources and Material Shortages).
Why Obsolescence Management matters in medical device development
A discontinued part is not just a procurement headache. For a regulated device, it touches patient supply, the design record, and audit exposure at the same time.
If a clinician depends on a monitor or analyzer and the line stops because one chip went end-of-life (EOL), that is a continuity-of-care problem. Resolving it through a substitute or redesign means a design change, and design changes carry regulatory weight. Under EU MDR 2017/745, the technical documentation must stay current, and a significant change can require a notified body assessment. In the United States, the FDA QMSR (21 CFR Part 820), effective February 2, 2026, incorporates ISO 13485:2016 by reference, so change control runs through ISO 13485 Clause 7.3.9, and manufacturers still apply FDA’s “deciding when to submit a 510(k) for a change” logic. Unmanaged obsolescence forces rushed changes that invite findings on traceability and risk control.
How Obsolescence Management works
IEC 62402 describes a process that runs from early design through retirement. The core activities:
- Set policy and an obsolescence management plan (OMP). Define ownership, monitored items, and decision criteria before problems appear.
- Design for resilience. Choose components with longer projected availability, avoid single-source parts, and capture form, fit, function, and interface (F3I) requirements so substitutes can be evaluated later.
- Monitor proactively. Track EOL and product-change notifications from suppliers and distributors against your bill of materials.
- Assess risk. Weigh the likelihood that an item goes obsolete within the device’s service life against the severity of impact, then prioritize.
- Resolve. Options include a last-time buy (also called lifetime buy), a qualified drop-in substitute, component emulation, or a redesign when no equivalent exists.
- Control the change. Run the resolution through change control, re-assess risk per ISO 14971:2019, requalify with IQ/OQ/PQ where the process is affected, and update the design history file.
Software obsolescence follows the same logic under IEC 62304, since an unsupported library or platform is a maintenance and cybersecurity exposure addressed alongside IEC 81001-5-1.
Common challenges and best practices
The most common failure is treating obsolescence as reactive firefighting. By the time a “last time buy” notice arrives, the team has weeks to decide, not months, and a panic buy ties up cash in inventory that may expire before it is consumed.
Three practical habits separate teams that cope from teams that scramble.
- Link the BOM to live monitoring so notifications reach the right engineer automatically.
- Qualify a second source during design, not during a crisis.
- Write change decisions down with a risk rationale, because an auditor will ask why a substitute was deemed equivalent and what verification supported that call.
Long-lived implantables and capital equipment deserve extra attention: a 10-year field life almost guarantees that some original components will disappear, so plan the refresh before the device ships.
How SJML helps with Obsolescence Management
SJML supports obsolescence management as part of its sustaining engineering and product lifecycle services, drawing on design, manufacturing, and regulatory capabilities under one roof. Work spans value analysis and value engineering (VAVE), supplier qualification and dual sourcing, and change governance structured to minimize the revalidation burden. Because the same teams handle ISO 14971 risk files, ISO 13485 quality records, and verification testing, a component substitution can move from assessment to qualified change without losing the regulatory thread. SJML also supports RMA and replacement management for fielded devices.
Talk to SJML’s engineering team →
Frequently asked questions
IEC 62402:2019 is the primary international standard, maintained by IEC technical committee 56. The second edition rewrote the 2007 application guide as a requirements standard. It defines an obsolescence management plan, proactive and reactive approaches, and resolution methods for any type of item. In medical devices, it works alongside ISO 13485 and ISO 14971.
End-of-life (EOL) is a supplier event: the manufacturer announces that a part will stop being produced. Obsolescence is the broader condition where a required item becomes hard or impossible to obtain, including EOL, diminishing sources, and long lead times. Obsolescence management is the discipline that anticipates and resolves both.
It depends on whether the change could significantly affect safety or performance. In the US, manufacturers apply FDA’s change-decision guidance; a like-for-like substitute often stays a documented internal change, while a functional or material change may need a new 510(k). Under EU MDR, significant changes can require a notified body assessment.
A last-time buy, sometimes called a lifetime buy, is a final purchase of enough units to cover a device’s remaining production and service needs once a supplier announces end-of-production. It buys time to qualify a substitute or redesign, but it carries inventory cost and shelf-life risk, so it is a bridge rather than a permanent fix.
Related terms
- Sustaining Engineering
- Design Change Control
- Bill of Materials (BOM)
- Supplier Qualification
- Risk Management (ISO 14971)
