This part is a kind of semiconductor called B6010K.

Function of this product has N-Channel 60-V (D-S) MOSFET.

Manufacturers : BiTEK

Image and pinout :

Some of the text within the PDF file :

N-Channel 60-V (D-S) MOSFET B6010K General Description The B6010K is the N-Channel logic enhancement mode power field effect transistors are produced using high cell density, DMOS trench technology. This high density process is especially tailored to minimize on-state resistance. These devices are particularly suited for low voltage application such as cellular phone and notebook computer power management and other battery powered circuits where high-side switching and low in-line power loss are needed in a very small outline surface mount package. Pin Configuration Features RDS(ON)=90mΩ@VGS=10V RDS(ON)=120mΩ@VGS=4.5V Super High Density Cell Design for Extremely Low RDS(ON) Exceptional On-Resistance and Maximum DC Current SOP-8 Package Applications Power Management in Note book Port [ ... ]

B6010K PDF Datasheet Download