HAKRC HK1S ESC FET identification
The mosfet marked with SP1 645 is possible to be &quot;SSM6J501NU P-channel 10A FET&quot; - this is what google has found and it seems to be in the same package as the one in your photo.
You could try to search for it's pair, filter on a supplier website 10A N-channel mosfets in that package and see what you get.
I also damaged the same ESC by connecting it to 2S battery as it was advertised, I plan to fix it, if I find the N-channel part number meanwhile I will edit this post.