I am sorry. I have blown this picture up and can’t find the W1815. Can you clarify which part it is?
So the part marking is the W1815 ? Is that correct?
to be honest im looking across them 4 and seeing different so im not 100%
so no not 100% sure
IT IS A4T15
A BAV70 has a part marking of the A4. Here is the link: https://www.digikey.com/short/h829q0tp
Is the T15 apart from the A4? That could be a date code or lot code. Not sure as I can’t see it clearly. You can look at this to see if this makes sense to what is on the board.