An Argument to Redefine IPC Class Definitions for Class 1, 2, & 3 Electronics: Is it Time for a New Class?

In the world of electronics manufacturing, the IPC standards provide critical guidance on the design, manufacturing, and testing of circuit assemblies. These standards are categorized into three primary classes [fig 1], Class 1, Class 2, and Class 3, based on the intended reliability and functionality of the end product. Class 1 covers products with the least stringent requirements, typically used for consumer electronics with short life spans and/or non-critical functions. Class 2 addresses products where performance and extended reliability are desirable but not mission-critical. Class 3, the highest tier, applies to products requiring consistent, high performance in demanding or harsh environments, such as aerospace or medical devices.