50pcs TO-220 Series MOS Transistors Kit IRFZ44N IRF510N IRF540N IRF3205 IRF9540N 55V To 500V For IRFZ44N IRF540N And IRF320550pcs TO 220 Power MOSFET Assortment Kit 10 Types, 55V to 500V, N & P Channel A comprehensive TO 220 power MOSFET assortment covering 10 of the most commonly used N channel and P channel MOSFETs in power electronics, from 55V 110A low voltage high current types to 500V 8A high voltage types. 5 pieces of each type, 50 pieces total ideal for prototyping, repair stock, and educational use. All devices are in standard TO 220 through hole package