This part is a kind of semiconductor called HRF140N06K.

Function of this product has N-Channel MOSFET.

Manufacturers : SemiHow

Image and pinout :

Some of the text within the PDF file :

HRF140N06K HRF140N06K 60V N-Channel Trench MOSFET FEATURES  BVDSS = 60 V  ID = 40 A  Unrivalled Gate Charge : 40 nC (Typ.)  Lower RDS(ON) : 11.5 mΩ (Typ.) @VGS=10V  100% Avalanche Tested December 2014 8DFN 5x6 1 Absolute Maximum Ratings TC=25℃ unless otherwise specified Symbol Parameter Value VDSS ID IDM VGS EAS EAR PD TJ, TSTG TL Drain-Source Voltage Drain Current Drain Current Drain Current – Continuous (TC = 25℃) – Continuous (TC = 100℃) – Pulsed (Note 1) Gate-Source Voltage Single Pulsed Avalanche Energy (Note 2) Repetitive Avalanche Energy (Note 1) Power Dissipation (TC = 25℃) Power Dissipation (TA = 25℃) Operating and Storage Temperature Range Maximum lead temperature for soldering purposes, 1/8” from case for 5 seconds 60 40 * 2 [ ... ]

HRF140N06K PDF Datasheet Download