The IRF3205 is a Power MOSFET, It is from IR utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. The DPak is a surface mount power package capable of accommodating die sizes up to HEX-4. It provides the highest power capability and the lowest possible on-resistance in any existing surface mount package. The D2Pak is suitable for high current applications because of its low internal connection resistance and can dissipate upto 2.0W.