I have an amplified box that the mosfet transistor K1507 was burned (totally in short-circuit) but the integrated pwm is also. I've already used thermal paste on top of the integrated one to try to identify the printed code on the component but unfortunately I'm having trouble identifying the code. It seems to me that the code would be 1503KM, does this code exist? .
Another printout would be the T3028Z (?)

http://www.datasheetspdf.com/datasheet/2SK1503-01.html