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I am looking to use the Harwin H3490-01 pin receptacle in a device that will be sterilized using a STERRAD or V-PRO vaporized hydrogen peroxide (VHP) process. As hydrogen peroxide is corrosive to many metals, I’m seeking guidelines for thickness of gold plating on electrical contacts to ensure proper corrosion resistance (since gold is corrosion resistant and approved as a compatible metal in these systems).
This Harwin connector datasheet shows a 0.1-0.15 micron gold plating thickness. While VHP sterilization is my specific application, I’m open to any guidance or supplier info regarding recommended gold plating thickness to prevent corrosion.
Thank you for contacting DigiKey , by looking at the data sheet this one has a Tin shell , a better option would be part number H3490-05 which has a Gold shell but we do not have this part to offer and the plating thickness is 0,10 to 0,15 u
This is one of those areas where a person’s likely to end up needing to do some characterization on their own, since tolerance to H2O2 vapor isn’t a particularly common requirement in typical electronics applications.
There’s also some application-specific variables that may come into consideration, e.g. whether you need to maintain corrosion resistance after (x) number of mating cycles, tolerance limits and evaluation criteria, etc.
