Student - By far one of my favorite mosfets. I used it for a 555 timer based flyback driver. As it is a cheaper alternative to an irfp250- and 400- series mosfet. Works great on voltages below 45 volts for non inductive loads, and up to about 30 volts with a motor, however it tends to get uncomfortably hot even with a massive heatsink, due to it's relatively high internal resistance. For the flyback, it worked perfectly without any problems up to about 28 volts, then it simply went into melt-down. Its main advantage, is that it has a very sensitive gate and does not need any form of a mosfet driver, and I ran it directly from my 555 timer. Although, it does perform best at frequencies below 450 kilo hertz though, despite the datasheet giving higher ratings. Still it was good enough to power a small SSTC directly from a 555 timer. However, it did encounter serious latching problems when it was running anywhere above 450 kilohertz. Finally, when I was running a mains frequency inverter from this transistor, I got a rather wierd effect, and that effect was that it litterally started humming at around 50hertz, when I used an old transformer core as a heatsink. I think however this has to do with the mu of the heatsink (ferrite core). Finally, this transistor is prone to latching, when driving inductive loads, and when I was running a 12 volt to 220 volt transformer at 18 volts, it was pulling over 5 amps open circuit! I think this has a lot to do with the high kickback voltage, but eather way, it cocked my powersupply. Overall, I would totally recommend for small inductive as well as large and small non inductive loads.