EOL notice (End-of-Life notice)

Notes

Because vehicles need service parts for 15 years or more, an unexpected EOL is a genuine crisis for a Tier 1.

Overview

An EOL (end-of-life) notice is a formal announcement from a component supplier that a part will be discontinued, giving the last date for orders and the last date on which parts will ship. Customers use the time before those dates to qualify a replacement, redesign, or place a last time buy large enough for their remaining production and service needs. Markets with long product lives, such as automotive and industrial equipment, feel these notices most.

How it works

Suppliers send EOL notices, also called product discontinuance notices, to their customers, their sales teams and their distributors. A notice typically names the affected part numbers, a last time buy date and a last ship date, and often a suggested replacement. JEDEC's J-STD-048 sets out how such notifications should be made, with the aim of helping customers manage the disruption and keep supply continuous.

Customers then choose a response. They can qualify an alternative, redesign the board, buy enough stock to last the rest of the product's life, or arrange supply through an authorised specialist that holds remaining stock or re-manufactures the device. A last time buy rests on demand forecasts, ties up cash and storage, and may leave too much or too little stock. Buying later on the open market raises the risk of re-marked or counterfeit parts.

Discontinuations often start in the fab: when an older wafer line or process is retired, every product built on it is affected. Some suppliers offer longevity programmes that commit to keeping listed parts available for a minimum period, such as 10 or 15 years from launch, after which their normal end-of-life policies still apply. Obsolescence management, described in IEC 62402, helps buyers plan for this rather than react.

Examples

• A microcontroller family discontinued after the wafer line that made it is closed, with a fixed date for last orders.
• An automotive Tier 1 placing a last time buy sized to cover the rest of a vehicle programme plus service parts.
• An industrial equipment maker qualifying a pin-compatible replacement named in the notice instead of buying lifetime stock.
• A defence customer arranging continued supply through an authorised distributor that holds or re-manufactures discontinued parts.
• A part listed in a supplier's longevity programme that stays available until its listed date before normal end-of-life rules apply.

Why it matters

Related terms

• Lifetime buy
• Longevity programme
• PCN
• Service parts

Where it appears on the Hub

Used on 37 pages of the Hub. In each group, the pages that mention it most come first.