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Let's say some parts within one of your products are discontinued. You already have a replacement that seems to fit from specifications. What tests do you usually conduct to verify proper operation? Long time test over temperature? Just a few test routines on the desktop?

I am currently in charge to define which tests should be done and I am searching for advice and when possible literature sources adressing the question above.

Thank you very much

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    \$\begingroup\$ What was wrong with the tests you used to determine whether the original component was suitable in the first place? Just use those. \$\endgroup\$
    – DKNguyen
    Jul 28, 2021 at 4:47
  • \$\begingroup\$ I am new in this company and the tests usually made are quite ... few. I just wanne hear what other usually invest in the testing \$\endgroup\$ Jul 28, 2021 at 4:52
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    \$\begingroup\$ Don't you first need to know the key parameters that are more important before you can design tests? I'd assume that this was documented when the product was designed. \$\endgroup\$
    – jonk
    Jul 28, 2021 at 4:55
  • \$\begingroup\$ Unfortunatly not. I just realized it boils down to work out the key parameters by myself to effectivly define the test routine. \$\endgroup\$ Jul 28, 2021 at 5:06
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    \$\begingroup\$ @NoiseEngineer Something isn't right here. If the product is so important that you have to formally test and document tests for replacement components then some requirements and testing procedures MUST have been done during the design of the original product with the original part. Are you a student on a summer job that has just been given something to occupy your time? When I was one I was given a similar job and I was told all the tests to do it on the replacement part. \$\endgroup\$
    – DKNguyen
    Jul 28, 2021 at 5:14

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From the comments to my question, I just realized: There is no generic answer to the question. It depends much on the key parameters of the product, the importance of the part and product and how good replacements meet the specification.

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    \$\begingroup\$ ... and whether there is an adequate specification in the first place. \$\endgroup\$
    – user16324
    Jul 28, 2021 at 13:02

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