Phonon is now Microsemi
Semiconductor ManufacturingUnited States11-50 Employees
Phonon is now Microsemi, a United States–based semiconductor and system-solutions provider. It operates as a wholly owned subsidiary of Microchip Technology Inc., with headquarters in Aliso Viejo, California, and serves markets that include communications, defense and security, aerospace, and industrial applications. Its portfolio emphasizes high-reliability components and system-level capabilities, including timing, power management, RF, security and related services, along with custom design capabilities. The company targets customers in defense, aerospace, communications and industrial sectors that require robust, secure, and time-critical solutions. As part of Microchip Technology, Microsemi benefits from a broader corporate platform while maintaining a focus on advanced, high-reliability semiconductors. In 2024, the company announced leadership changes with the appointment of Bel Lazar as vice president of its Aerospace & Defense business unit.