Design engineers and buyers can secure their supplies of these parts by working directly with us or with our distribution partners." These lateral DMOS switches are key components in a variety of high-performance analog circuits where ultra-fast, sub-nanovolt switching times are critical. Linear Systems is the only company to build these lateral DMOS parts using Siliconix' proprietary polysilicon gate technology and is the only Vishay/Siliconix-approved replacement manufacturer. This fabrication process is key to the speed and reliability of these parts. Linear Systems in 2001 reached an agreement with Vishay/Siliconix to produce these lateral DMOS parts after Vishay decided to exit that business. Under that agreement, Linear Systems received mask sets, and process and technical information for the SD210, SD214, SST211, SST213, SST215, SD5000, SD5001, SD5400, and SD5401 product families from Siliconix.