View std4ns25 datasheet:

STD4NS25 N-CHANNEL 250V - 0.9? - 4A DPAK/IPAK MESH OVERLAY™ MOSFET TYPE VDSS RDS(on) ID STD4NS25 250 V < 1.1 ? 4 A TYPICAL RDS(on) = 0.9 ? EXTREMELY HIGH dv/dt CAPABILITY 3 3 2 100% AVALANCHE TESTED 1 1 ADD SUFFIX “T4” FOR ORDERING IN TAPE & REEL DPAK IPAK DESCRIPTION TO-252 TO-251 Using the latest high voltage MESH OVERLAY™ process, STMicroelectronics has designed an ad- vanced family of power MOSFETs with outstanding performance. The new patented STrip layout cou- pled with the Company’s proprietary edge termina- tion structure, makes it suitable in coverters for INTERNAL SCHEMATIC DIAGRAM lighting applications. APPLICATIONS HIGH CURRENT, HIGH SPEED SWITCHING SWITH MODE POWER SUPPLIES (SMPS) DC-DC CONVERTERS FOR TELECOM, INDUSTRIAL, AND LIGHTING EQU