Manufacturing hermetically sealed components is not that easy as it sounds to be. There is a lot to taken care of and inspect to make sure that the symbol that has been produced is a quality one and would have a good life. But making this true is definitely a adamantine task at hand when such sealed devices are opportunity to contamination. With the intrusion of wetness droplets that can corrode the interiors of the IC and other uncover gases that can profess the working capability one can’t actually elide them. Prohibition only the fussy sealed component, failure of a single IC can even debacle the whole tool at hand.
So you can see that subsequent extensive Hermeticity Testing is exactly critical in ensuring the products quality. Let us understand about some concerning the major tests done under it.
Identifying Leak Sites:
The first and vooraanstaand step here is to check and identify such sites in the concerned sample. This can be done the optimum by using Helium Sprays. Here the Solicitous Device is fixtured so as it draw a vacuum from the internal cavity into the leak detector instrument through the puncture location of the test site. Helium spray creates a small envelope of the gas in the proximity of a leak sector area. This helium is drawn inside the cavity and is detected using the sensing instruments.
Apart from Helium One can and utilize Kr 85 in this identification procedure.
Fluorescent Dye Impregnation:
This step is done to discover the leak regions. It is done by using specialized fluorescent dyes that helps in checking if any crack is there on the sealed sample or not.
Helium/Kr 85 Fine Leak:
In this test, devices are typically preconditioned in a pressurized container and after fulfilling the required test conditions the leak cost is measured further recorded. Here generally a pass or dereliction a criterion is used to ensure whether the sample is a taste sealed output or not.
If you are thinking to employ such tests in the quality checks of the sealed component manufactured at your company, then the best idea to do so is by going for a testing service provider that offer Hermeticity tests that comply upon MIL standard testing practices. To find the one you tin search on the internet about them. Before making the option regarding the provider you bid for do ensure that it is reputed in the industry for its work.