The STB31N65M5 is a N-channel MOSFET device manufactured by STMicroelectronics. The device has a rated breakdown voltage of 650V, Rds(on) of 0.124 Ohms, and a current rating of 22A. The STB31N65M5 utilizes ST's MDmesh V technology, which offers low on-resistance, and is ideal for high-current applications such as DC-DC converters and motor control applications. The STB31N65M5 is designed for use in automotive and industrial applications, making it reliable and durable.