Now, the global power components in the transformers have been from previous hook type products to high frequency switching power supply components change of direction. In addition, the global mobile phone, notebook PC, digital cameras and portable AV products such as battery products used by the power semiconductor product development work is currently underway to high performance, high integration, good heat dissipation and microminiaturization direction. Global power semiconductor products include Power-MOSFET and rectifying diode discrete devices, DC-DC converter, lithium-ion battery protection IC and regulator. Wherein, as a result of the global power switch products of high frequency of development needs, Power-MOSFET has become the most used global power semiconductor products. Recently, used in automotive products to high 40V with 1.5m ohm on resistance of Power-MOSFET power semiconductor new products have been successfully developed. Global semiconductor diode rectifier with products in addition to AC, DC transform, can also be applied to prevent current and circuit protection field. It includes PN FRD and SBD. Recently, with ultra high speed switching, high pressure and ultra small functional characteristics of global FRD and SBD components have been successfully developed, it will become the future of the global market demand for the product key.