Hello Sir,
We bought the parts, LM2596S-12/NOPB from two suppliers, but after testing, we found there are many parts which voltage cannot reach to 12V (only 10.8V).
And those goods are from the same supplier.
We doubt those parts might fake.
Based on our observation, the fonts of marking, it seems a slight different between two parts.
You may refer to below two pictures, the left one is the part with normal voltage (12V).
And the right picture is the one with abnormal voltage (10.8V only).
Could you help check whether you have this kind of marking fonts or not?
Or do you have any idea to recognize which one is real or fake?
Best Regards,
Allen Yang
