onsemi UJ4N075004L8S 750V 4.3mΩ Gen 4 EliteSiC JFET Power Essentials
2 Min Read October 17, 2025
Discover the onsemi UJ4N075004L8S, a high-efficiency 750 V N-channel SiC JFET with ultra-low on-resistance, ideal for power switching and surge protection.
The UJ4N075004L8S is a 4th-generation normally-on N-channel SiC JFET from onsemi, rated for 750 V and optimized for high-efficiency power switching. It offers ultra-low on-resistance (4.3 mΩ at 2 V, 80 A), high thermal performance with silver-sintered die attach, and operation up to 175 °C. Housed in a compact H-PDSO-F8 package, it is well-suited for solid-state circuit breakers, relays, battery disconnects, and surge protection applications. The detailed process features of this SiC JFET die has been analyzed in this report and compared with other selected SiC JFET dies analyzed at TechInsights
