{"id":21295,"date":"2023-04-26T16:20:15","date_gmt":"2023-04-26T20:20:15","guid":{"rendered":"https:\/\/a2globalelectronics.com\/?p=21295"},"modified":"2023-04-27T08:54:23","modified_gmt":"2023-04-27T12:54:23","slug":"how-uneven-circuit-aging-impacts-the-procurement-of-electronic-components","status":"publish","type":"post","link":"https:\/\/a2globalelectronics.com\/ja\/obsolescence-management\/how-uneven-circuit-aging-impacts-the-procurement-of-electronic-components\/","title":{"rendered":"How Uneven Circuit Aging Impacts the Procurement of Electronic Components"},"content":{"rendered":"

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Even as chip reliability continues to increase, the industry is grappling with the negative impact of aging on reliability, making design and procurement of electronic components challenging.<\/span><\/b><\/strong><\/h2>\n

Although foundries do their best to predict circuit aging with computer models, no model is perfect. Uneven circuit aging can cause components to fail unexpectedly\u2014and in the rapidly developing electronics industry, the failed component may have already become <\/span>obsolete<\/span><\/a>. Users must source a replacement fast, or their production line will come to a halt. But finding electronic parts to replace obsolete ones can be a challenge.<\/span>\u00a0<\/span><\/p>\n

Some components of a circuit may age faster\u2014and thus fail sooner\u2014than others, giving the circuit a shorter lifespan than expected. This uneven circuit aging<\/a> can present challenges for planning, design, and <\/span>procurement<\/a> of electronic components<\/span>. Here are some tips to help plan for and find replacement electronic parts when uneven aging strikes.<\/span>\u00a0<\/span><\/p>\n

What is uneven circuit aging?<\/span><\/b>\u00a0<\/span><\/h3>\n

No electronic part can last forever. All parts age<\/span>,<\/span> and eventually will fail if used beyond their lifespan. The rate at which a part ages depends on many factors, including how often it\u2019s used and the temperature and voltage it\u2019s exposed to.\u00a0<\/span>\u00a0<\/span><\/p>\n

The tricky thing about electronic parts is that they may contain hundreds, thousands, or even millions of components working together. Some of these components are more durable than others. Some end up being used more often while the circuit is in operation, causing them to age faster. Some components see higher local temperatures than others due to joule heating.\u00a0<\/span>\u00a0<\/span><\/p>\n

As a result, it can be difficult to predict how long each component will last in use. If a single electronic component fails before the rest, the entire system can stop working\u2014and you can be faced with the challenge of finding a replacement part. When a component or subcomponent fails due to uneven aging, it may already have become <\/span>obsolete<\/span><\/a>.\u00a0<\/span>\u00a0<\/span><\/p>\n

Designing with circuit aging in mind<\/span><\/b>\u00a0<\/span><\/h3>\n

There are two approaches to tackling component obsolescence: <\/span>reactive and proactive<\/span><\/a>.\u00a0<\/span>\u00a0<\/span><\/p>\n

The reactive approach consists of trying to find replacement electronic parts after obsolescence is announced, typically through an end-of-life or last-time-buy notice. These notices provide, at most, 180 days for users to determine their quantity needs and submit their last orders. With so little time to plan ahead, companies may waste valuable capital on stockpiling parts that may end up being unneeded or deteriorating in storage.<\/span>\u00a0<\/span><\/p>\n

Proactive approaches to obsolescence management start from the beginning of a design. They typically involve:<\/span>\u00a0<\/span><\/p>\n