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

1 Like

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.

1 Like

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:

1 Like