Possible defective product

I posed the question to the chat thing and the operator referred me to this channel. I purchased 10 of a part, I’ve tried four of them without success. I’m either off my game or there’s the remotest possibility the parts are defective. Do you have a list of known part/batch “issues”? Happy to supply additional info but I’m not so sure this is the right place. Over to you for direction. Thanks.

Hi Nev,

Thank you for your inquiry.

Defective product history is tracked. I just messaged you with contact information to be able to reach out to Applications Engineering for technical support on your area of concern.

Thanks again, let us know if we can be of further assistance.