AMD does not publish them so you won't find them anywhere else either. not like one of us has an inside track to internal AMD engineering info
there have been some reviews done on them though so you might find what you are looking for checking them out. mainly though they are tied to a CPU review where they tested with the wraith cooler and then a better 3rd party one.
little bit of searching and i don't see any such specs listed anywhere. i see some reviews with how it performs but none of what you are asking about.
most likely you'll have to get one in hand and check it out yourself. the fan should have a part number you can look up for the fan info and you can get the physical info directly.
other than fan specs the rest of the info is not really provided with most reviews i've read.