This part is a kind of semiconductor called D3N50.

Function of this product has AOD3N50.

Manufacturers : Alpha & Omega Semiconductors

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Some of the text within the PDF file :

AOD3N50 3A, 500V N-Channel MOSFET General Description The AOD3N50 has been fabricated using an advanced high voltage MOSFET process that is designed to deliver high levels of performance and robustness in popular AC-DC applications. By providing low RDS(on), Ciss and Crss along with guaranteed avalanche capability these parts can be adopted quickly into new and existing offline power supply designs. Features VDS (V) = 600V @ 150°C ID = 2.8A RDS(ON) < 3Ω (VGS = 10V) 100% UIS Tested! 100% R g Tested! TO-252 D-PAK Top View Bottom View D D G S S G G S Absolute Maximum Ratings TA=25°C unless otherwise noted Parameter Symbol VDS Drain-Source Voltage VGS Gate-Source Voltage Continuous Drain Current B Pulsed Drain Current Avalanche Current C C Maximium 500 ±30 2.8 1.8 9.0 2.0 60 120 [ ... ]

D3N50 PDF Datasheet Download