Mouser Electronics is an online distributor of electronic components based in Mansfield, Texas, United States. Mouser Electronics was founded in El Cajon, California by Jerry Mouser in 1964. Jerry Mouser was a physics teacher who needed components for an electronics program at his high school. In 1983, his company relocated to its branch location in Mansfield, Texas, and in 2001 expanded into a new facility on seven acres there. In January 2000, Mouser became a wholly owned subsidiary of TTI, Inc.