si4430dy transistor of datasheet pdf SI4430DYManufacturer : Vishay Siliconix Description : N-Channel 30-V MOSFET SI4430DYManufacturer : VISAY[Vishay Siliconix] Description : N-Channel 30-V MOSFET SI4430DYManufacturer : VISAY[Vishay Siliconix] Description : N-Channel, 30-V MOSFET