This part is a kind of semiconductor called HFA9N90.

Function of this product has 900V N-Channel MOSFET.

Manufacturers : SemiHow

Image and pinout :

Some of the text within the PDF file :

HFA9N90 July 2013 BVDSS = 900 V HFA9N90 900V N-Channel MOSFET FEATURES ‰ Originative New Design ‰ Superior Avalanche Rugged Technology ‰ Robust Gate Oxide Technology ‰ Very Low Intrinsic Capacitances ‰ Excellent Switching Characteristics ‰ Unrivalled Gate Charge : 55 nC (Typ.) ‰ Extended Safe Operating Area ‰ Lower RDS(ON) ȍ 7S #9GS=10V ‰ 100% Avalanche Tested RDS(on) typ ȍ ID = 9.0 A TO-247 1 2 3 1.Gate 2. Drain 3. Source Absolute Maximum Ratings Symbol VDSS ID IDM VGS EAS IAR EAR dv/dt PD TJ, TSTG TL Drain-Source Voltage Drain Current Drain Current Drain Current Gate-Source Voltage Single Pulsed Avalanche Energy Avalanche Current Repetitive Avalanche Energy Peak Diode Recovery dv/dt TC=25୅ unless otherwise specified Parameter Value 900 Units V [ ... ]

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