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Component classification - What is Class 1,2,3?

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Kevin Yeoh

#58896

Component classification - What is Class 1,2,3? | 26 May, 2009

May i know how do we differentiate between Class 1, 2 and 3 components? What are the key differences between those three classes?

When i check at IPC document, it is stated that

Class 1: General Electric Class 2: Dedicated Service Electronic products Class 3: High reliability products

Am i referring to the right classification?

Thanks.

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#58979

Component classification - What is Class 1,2,3? | 2 June, 2009

You're talking equipment classification. We're not sure what your component supplier means. What do they say?

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RLM

#59001

Component classification - What is Class 1,2,3? | 4 June, 2009

Are you refering to components or assemblies. Assemblies are classified as 1,2 or 3 per IPC-A-610. Components are classified 1 - 6 for moisture sensitivity per J-STD-020

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#59003

Component classification - What is Class 1,2,3? | 4 June, 2009

If you are talking about assemblies, Class 1 is like cheap toys or something you wouldn't expect to last very long. Class 2 would be components for a television, air conditioner, automobile (except safety critical). Basically, things that you would be pissed off if they fail but you would survive. Class 3 is for devices that, if they fail someone could be injured or killed, for example, military or medical applications. Some of our customers pay extra to have their non-safety critical devices built to class 3 standards for added reliability.

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