Part identification

What would be this component? I found some data sheet saying it a pnp transistor because it has the mark as 2L, but what is the T rotate 90 degrees? Which brand add that letter on vertical?

Hello easfreitas.
It is a S-LMBT5401LT1G

You can replace it with MMBT5401 marking K4M

Agree with you on the PNP. I was thinking on a few marking 2L datasheets that I found and all point to be PNP as you mentioned. I’m wondering which brand has the 2L and the additional letter rotate 90 degrees. All that I found don’t have the letter rotate 90 degrees. Found some on OnSemi that have the additional letter, but is not rotated.

The inverted letter is the lot number and has nothing to do with the marking.
Different manufacturers mark differently.
Any element marked as 2L, in a SOT-23 case may be what you need.
But, you definitely need to check the characteristics according to the datasheet.

This is an example: