So I have an edge connector that according to Alibaba Chinese salesman has tin-plated terminals (datasheet a bit unclear).
I am making a product where I am inserting a PCB into an edge connector and I need to decide on Surface Treatment for the PCB that I am inserting into the edge connector.
The PCB will be inserted only one time during its lifetime (during production) and will stay outdoors (but inside an IP56 box).
So can I get by with only HASL or should I use ENIG? Should I use Goldfingers?
Of course I want to get by as cheap as possible.. but without any quality concerns.