This part is a kind of semiconductor called 12N10.

Function of this product has N-CHANNEL POWER MOSFET.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 12N10 12A, 100V N-CHANNEL POWER MOSFET  DESCRIPTION The UTC 12N10 is an N-channel mode power MOSFET using UTC’s advanced technology to provide customers with minimum on-state resistance for extremely high dense cell design, rugged avalanche characteristics and less critical alignment steps.  FEATURES * RDS(on) < 0.18Ω @ VGS=10V, ID=6A * High switching speed * Low gate charge  SYMBOL 2.Drain Power MOSFET 1.Gate 3.Source  ORDERING INFORMATION Ordering Number Lead Free Halogen Free 12N10L-TA3-T 12N10G-TA3-T 12N10L-TM3-T 12N10G-TM3-T 12N10L-TN3-R 12N10G-TN3-R - 12N10G-S08-R Note: Pin Assignment: G: Gate D: Drain Package TO-220 TO-251 TO-252 SOP-8 S: Source Pin Assignment 12345678 Packing GDS - - - - - Tube GDS - - - - - T [ ... ]

12N10 PDF Datasheet Download