This part is a kind of semiconductor called 5N52U.

Function of this product has STD5N52U.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

STD5N52U, STF5N52U N-channel 525 V, 1.25 Ω typ., 4.4 A UltraFASTmesh™ Power MOSFETs in DPAK and TO-220FP packages Datasheet - production data Features TAB 3 1 DPAK 3 2 1 TO-220FP Figure 1. Internal schematic diagram D(2, TAB) Order codes VDS RDS(on) max ID PTOT STD5N52U STF5N52U 525 V 1.5 Ω 70 W 4.4 A 25 W • Outstanding dv/dt capability • Gate charge minimized • Very low intrinsic capacitances • Very low RDS(on) • Extremely low trr Applications • Switching applications Description These devices are N-channel Power MOSFETs G(1) developed using UltraFASTmesh™ technology, which combines the advantages of reduced onresistance, Zener gate protection and very high dv/dt capability with an enhanced fast body-drain recovery diode. S(3) AM01476v1 Order codes STD5N52 [ ... ]

5N52U PDF Datasheet Download