This part is a kind of semiconductor called 19N10.

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 19N10 100V N-Channel MOSFET „ DESCRIPTION Power MOSFET The UTC 100V N-Channel enhancement mode power field effect transistors (MOSFET) are produced by UTC’s planar stripe, DMOS technology which has been tailored especially in the avalanche and commutation mode to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse. They are suited for low voltage applications such as audio amplifier, high efficiency switching DC/DC converters, and DC motor control. „ FEATURES * RDS(ON) = 0.1Ω @VGS = 10 V * Ultra low gate charge ( typical 19nC ) * Low reverse transfer Capacitance ( CRSS = typical 32pF ) * Fast switching capability * Avalanche energy Specified * Improved dv/dt capability, high ruggedness „ SYMBOL 2 [ ... ]

19N10 PDF Datasheet Download