What Is End of Life (EOL)? Definition, Risks and How to Prepare in Electronics Projects 

End of Life, or EOL – a term that can raise concerns in the world of electronics. Especially when it applies to key components of your product. If you design devices with displays, you have certainly encountered this concept. And if not – this article explains what EOL is, why it matters, and how to effectively manage the risks associated with it. 

What Is EOL? Definition 

EOL (End of Life) is a formal status assigned by a component manufacturer indicating the beginning of the phase-out process of its availability and support, officially communicated within the product lifecycle framework. 

In practice, however, EOL is rarely a sudden event. It is usually a time-distributed process preceded by a series of announcements and stages which, if identified early enough, allow you to prepare for changes and minimize their impact on your project. 

EOL and Displays 

Displays are among the components particularly vulnerable to EOL. This results from several key factors. 

• Rapid technological development. The visual information display market is evolving dynamically – manufacturers regularly introduce new solutions with improved performance, greater durability, and higher energy efficiency. As a result, older models quickly lose commercial attractiveness and are phased out. 
• High production specialization. Each display model requires dedicated tooling, technology, and production lines. Maintaining production of niche models with limited demand eventually becomes economically unjustified. 
• Component lifecycle shorter than the end-product lifecycle. The end device may be manufactured for 5–10 years, while the market lifetime of the LCDs, OLED displays, or EPDs used in it may be shorter. At Unisystem, we aim to select components in a way that ensures their availability for at least 5 years. At the same time, displays – like most electronic components – are continuously improved and introduced in subsequent revisions. They often remain electrically and mechanically compatible; however, each revision requires verification and, in some cases, minor and controlled design modifications. 

It is worth emphasizing that the dynamic development of display technologies is not inherently negative. On the contrary, it enables continuous improvement of designed devices, better alignment with evolving UX trends, and growing user expectations. Customers accustomed to frequent innovation in consumer electronics increasingly expect similar standards in industrial electronics, making conscious lifecycle management a competitive advantage. 

Symptoms of Approaching EOL (End of Life) 

The end of a component’s lifecycle rarely happens abruptly – it is usually preceded by a series of signals and formal manufacturer communications. Proper interpretation of these signals allows early risk assessment and proactive action before changes lead to actual design or production problems. 

PCN (Product Change Notification) 

A PCN (Product Change Notification) is an official notice of changes to a product, such as a new revision, modification of components, technology, or production processes. These changes may or may not affect device performance, which is why every PCN should be verified for compatibility with the existing design. 

NRND (Not Recommended for New Designs) 

The NRND (Not Recommended for New Designs) status indicates that a component is no longer recommended for new projects. Although it may still be available and in production, this status serves as a clear warning signal that its lifecycle is approaching its end and alternative solutions should be considered. 

Is EOL a Real Problem for Your Project? 

The short answer is: yes, definitely. 

Ignoring EOL status may lead to serious business consequences: 

• production interruptions – a single missing component can halt the entire manufacturing process, 
• redesign costs – changing a display often requires PCB modifications, enclosure adjustments, software updates, and renewed certifications, 
• contract losses – failure to meet delivery deadlines may result in contractual penalties, 
• service challenges – lack of spare parts may hinder or prevent warranty and post-warranty repairs. 

At the same time, proactive EOL management enables advance planning, risk mitigation, and supply continuity. 

Last Time Buy (LTB) 

Last Time Buy (LTB) involves a one-time purchase securing component stock for the remaining lifecycle of the product. It is the simplest way to maintain production continuity without modifying the design. 

This solution works particularly well when: 

• the product is in a mature lifecycle phase, 
• sales volume is stable and predictable, 
• a clearly defined production end date exists. 

However, a one-time stock purchase requires: 

• accurate demand forecasting (excess inventory generates costs, shortages create downtime risk), 
• appropriate storage conditions, 
• capital being tied up for an extended period. 

Last Time Buy does not provide a long-term solution, but it is often the safest transitional approach. 

When using the Last Time Buy (LTB) option, storing a larger volume of inventory may become a challenge. Therefore, already at the supplier selection stage, it is worth verifying whether inventory buffering is available. At Unisystem, we have warehouse facilities that enable us to provide such a service. It includes inventory planning based on the customer’s forecasted demand. As a result, we help secure production continuity, stabilize the supply chain, and reduce operational pressure related to ongoing component availability. The solution also simplifies logistics processes, minimizes the risk of downtime, and supports better cost control throughout the entire product lifecycle. 

In practice, even when these conditions are met, validation is necessary – both on the hardware and software sides. Minor driver adjustments, timing modifications, or initialization parameter updates are often required. 

The advantage of this approach is relatively low cost and short implementation time. The limitation may be the availability of compatible replacements, especially for custom displays. 

Product Redesign 

If no suitable replacement is available, partial or complete product redesign may be required. This is the most demanding, but sometimes the only viable scenario – particularly in long-lifecycle projects. 

Redesign may include PCB modifications, changes in power supply, interfaces, and control signals, as well as enclosure adjustments to accommodate a new display. Software and driver updates are often necessary due to different component characteristics. The entire process may require renewed environmental and EMC testing, and in many cases recertification, e.g., CE marking, UL compliance, or industry-specific standards, including medical regulations. 

Although the initial cost is high, redesign can be an investment that improves device performance, secures the product for future years, and restores control over its long-term development. 

Cooperation with a Partner Offering Long-Term Support 

More and more companies choose to work with manufacturers offering a controlled and predictable component lifecycle. 

Some manufacturers – including Unisystem – provide displays designed for long-term availability, parameter stability between revisions, and backward compatibility. A key element of this approach is also a transparent and clearly communicated policy regarding product changes (PCN), NRND status, and EOL announcements, enabling customers to plan product development and production in advance. 

This approach helps: 

• reduce the risk of sudden changes, 
• simplify production and service planning, 
• lower the Total Cost of Ownership (TCO). 

In practice, this means greater predictability – a critical factor in industrial applications. 

How Does Unisystem Support Customers in Managing EOL Risk? 

At Unisystem, we treat EOL not only as a technical issue but primarily as a strategic challenge that can significantly affect production continuity, product maintenance costs, and customer relationships. Therefore, we support our customers at every stage of the product lifecycle – from design, through production, to long-term service. 

We Monitor Product Lifecycles 

We continuously track manufacturer announcements and status changes such as PCN, NRND, and EOL. This allows us to inform customers in advance about potential risks and provide sufficient time for informed decision-making before issues impact production. 

We Recommend Long-Lifecycle Solutions 

Already at the design stage, we recommend selecting displays with predictably long lifecycles and stable availability. This is particularly important in industrial applications such as automation, medical devices, or transportation, where long-term supply continuity and parameter consistency are critical. 

We Provide Alternatives 

We maintain a broad portfolio of displays from various manufacturers, enabling us to propose replacements when a specific model is declared EOL. We also provide technical support – from compatibility analysis and validation to full implementation of a new solution.