This part is a kind of semiconductor called K2141.
Function of this product has SWITCHING N-CHANNEL POWER MOS FET INDUSTRIAL USE.
Manufacturers : NEC
Image and pinout :

Some of the text within the PDF file :
DATA SHEET MOS FIELD EFFECT TRANSISTOR 2SK2141 SWITCHING N-CHANNEL POWER MOS FET INDUSTRIAL USE DESCRIPTION The 2SK2141 is N-channel Power MOS Field Effect Transistor designed for high voltage switching applications. PACKAGE DIMENSIONS (in millimeters) FEATURES 10.0 ± 0.3 • • • • φ3.2 ± 0.2 4.5 ± 0.2 2.7 ± 0.2 Low On-state Resistance RDS(on) = 1.1 Ω MAX. (VGS = 10 V, ID = 3.0 A) 15.0 ± 0.3 LOW Ciss Ciss = 1150 pF TYP. 3 ± 0.1 1 2 3 4 ± 0.2 High Avalanche Capability Ratings Isolated TO-220 (MP-45F) Package Drain to Source Voltage Gate to Source Voltage Drain Current (DC) Drain Current (pulse) VDSS VGSS ID (DC) ID (pulse)* 600 ± 30 ± 6.0 ± 24 35 2.0 –55 to +150 150 6.0 12 V V A A W W °C °C A mJ 1 2 3 2.54 TYP. 0.7 ± 0.1 13.5 MIN. 0.65 ± 0.1 ABSO [ ... ]
K2141 PDF Datasheet Download
