This part is a kind of semiconductor called B14NK60Z.
Function of this product has STB14NK60Z.
Manufacturers : STMicroelectronics
Image and pinout :

Some of the text within the PDF file :
STB14NK60Z, STP14NK60Z, STW14NK60Z N-channel 600 V, 0.45 Ω typ., 13.5 A SuperMESH™ 2 Power MOSFETs in I PAK, TO-220 and TO-247 packages Datasheet - obsolete product Features TAB TAB Order codes VDS RDS(on) max. ID PTOT 123 t(s)I2PAK 3 2 1 TO-220 lete ProducTO-247 bsoFigure 1. Internal schematic diagram - OD(2, TAB) duct(s)G(1) solete ProS(3) Ob AM01476v1 STB14NK60Z-1 STP14NK60Z 600 V 0.5 Ω 13.5 A 160 W STW14NK60Z • Extremely high dv/dt capability • 100% avalanche tested • Gate charge minimized • Very low intrinsic capacitances • Very good manufacturing repeatability • Zener-protected Applications • Switching applications Description These devices are N-channel Zener-protected Power MOSFETs developed using STMicroelectronics' SuperMESH™ technology, ach [ ... ]
B14NK60Z PDF Datasheet Download
