I've got a SOT-23 transistor (I think, but it could also be an IC) marked with 1E. Another one is marked with A7W. Then I can also see WR5. How are you supposed to decode these?
Electronic – Small SOT-23 transistor markings
componentsmarkingssurface-mount
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Best Answer
You could try the "SMD code book" or get the actual schematic or package for the device, but there may not really be a clear way to identify many SMD parts from the surface.
1E for example might be a plain BC847A according to the list.