This part is a kind of semiconductor called 30H150.

Function of this product has N-Channel Enhancement Mode MOSFET.

Manufacturers : FNK

Image and pinout :

Some of the text within the PDF file :

30H150 N-Channel Enhancement Mode MOSFET Features • 30V/150 A RDS(ON)=4.5mΩ ( ) @ VGS=10V RDS(ON)=6.5mΩ ( ) @ VGS=4.5V • Super High Dense Cell Design • Reliable and Rugged • Avalanche Rated • Lead Free and Green Devices Available (RoHS Compliant) Applications • Power Management in Desktop Computer or DC/DC Converters. D G S N-Channel MOSFET Absolute Maximum Ratings Symbol Parameter Common Ratings (TA=25°C Unless Otherwise Noted) VDSS VGSS TJ TSTG IS Drain-Source Voltage Gate-Source Voltage Maximum Junction Temperature Storage Temperature Range Diode Continuous Forward Current IDP 300µs Pulse Drain Current Tested ID Continuous Drain Current PD Maximum Power Dissipation RθJC Thermal Resistance-Junction to Case RθJA Thermal Resistance-Junction to Ambient EAS D [ ... ]

30H150 PDF Datasheet Download