pSemi Announces World’s Highest Linearity UltraCMOS+™ SP4T RF Switch

New PE42448 SP4T RF switch delivers exceptional linearity, insertion loss, and power handling

SAN FRANCISCO--(BUSINESS WIRE)--pSemi^® Corporation, a Murata company leading in the design and development of semiconductor integration and advanced connectivity, today announced the introduction of PE42448: a high-linearity SP4T RF switch manufactured on pSemi’s UltraCMOS+ advanced silicon-on-insulator (SOI) technology.

The PE42448 switch, covering 10 MHz to 6 GHz with 52 dBm P_MAX,PEAK, expands pSemi’s deep RF switch portfolio by nearly breaking the 90-dBm IIP3 barrier. Historically, the level of linearity achieved by the PE42448—the world's highest for an RF SOI switch—has only been attainable through bulky, less reliable, and more costly solutions.

The SP4T is one of several first-generation switches to use pSemi’s newly announced UltraCMOS+ RF platform, providing a monolithic and simple solution to complex switch architectures and system lineups. This device also offers seamless integration with pin-for-pin compatibility with the recently announced PE42443 and PE42444.

The PE42448 also offers ease-of-use features through one logic control for two pairs of PE42448s and a simple power-up and power-down sequence. These features make this device ideal for massive multiple-input, multiple-output (MIMO), test and measurement (T&M), land mobile radio (LMR), and general-purpose applications.

“We are proud to expand our industry-leading, high-linearity, high-power RF switch offerings with the introduction of the PE42448,” says Rodd Novak, vice president of sales and marketing, pSemi. “The linearity of this switch empowers our alpha customers to drastically reduce total solution size, accelerate design cycles, and significantly reduce BOM cost and component count. I look forward to seeing how the PE42448 will be used to change system architectures in the various industry applications we support.”

By delivering superior linearity, low insertion loss, and power handling capabilities in a cost-effective, reliable, and compact form factor, the PE42448 is set to change RF system architectures, enabling a new generation of efficient designs for high-performance wireless solutions.

pSemi will showcase PE42448 at the 2025 International Microwave Symposium (IMS), to be held June 15–20, 2025, in San Francisco. Please stop by booth #443 to see a live demonstration. PE42448 samples are available now with commercial availability in July 2025. For more information, please visit the PE42448 product page. To request a sample, please contact [e-mail].

About pSemi

pSemi (formerly Peregrine Semiconductor) is a leader in the design and development of semiconductor integration, providing world-class capabilities with high-performance RF, analog and mixed signal solutions. With a 30-year legacy of technology advancements, strong IP portfolio and deep expertise in RF integration, our solution portfolio spans power management, connected sensors, antenna tuning, and RF frontends, which enable advanced modules for smartphones, base stations, personal computers, electric vehicles, data centers, IoT devices, healthcare and more. A wholly owned subsidiary of Murata Electronics North America, Inc., pSemi is headquartered in San Diego, with additional offices spanning North America, Europe, and Asia. For more information, please visit www.psemi.com and connect with us on LinkedIn at https://www.linkedin.com/company/psemi/.