Qorvo / UnitedSiC UJ4C/SC 750V Gen 4 SiC FETs

UnitedSiC / Qorvo UJ4C/SC 750V Gen 4 SiC FETs are a high-performance series delivering industry-best performance Figures of Merit that lower conduction losses and increase efficiency at higher speed, all while improving overall cost-effectiveness. Available in 5.4mΩ to 60mΩ options, the Gen 4 series is based on a unique cascode configuration, where a high-performance SiC JFET is co-packaged with a cascode optimized Si-MOSFET to produce a standard gate drive SiC device. The standard gate-drive characteristics of the UJ4C/SC 750V FETs allow for "drop-in replacement" functionality. Designers can significantly enhance system performance without the need to change gate drive voltage by replacing existing Si IGBTs, Si FETs, SiC FETs, or Si super-junction devices with the UnitedSiC / Qorvo UJ4C/SC FETs.

The UnitedSiC / Qorvo UJ4C/SC 750V Gen 4 SiC FETs are offered in a three-lead TO247-3L package, a four-lead TO-247-4 package featuring a Kelvin Gate connection, or a MO-229 package. The Kelvin source design of the TO-247-4 package significantly reduces switching losses and gate ringing. The MO-229 package delivers faster switching and cleaner gate waveforms.


  • 750V VDS rating
  • Low RDS(on) from 5.4mΩ to 60mΩ
  • Key Figures of Merit enable next-gen, high-performance power designs
    • Best-in-class RDS(on) x Area
    • Improve the Qrr and Eon/Eoff losses at a given RDS(on)
    • Reduces both Coss(er)/Eoss and Coss(tr)
  • 5µs short-circuit withstand time at 6mΩ
  • Can be safely driven with standard 0V to 12V or 15V gate drive voltage
  • Excellent threshold noise margin maintained with true 5V threshold voltage
  • Operates with all Si IGBT, Si FET, and SiC FET drive voltages
  • Excellent reverse recovery
  • Excellent body diode performance (Vf<2V)
  • Low gate charge
  • ESD protected, HBM class 2
  • TO247-3L, TO247-4L (Kelvin), and MO-229 packages
  • AEC-Q101 qualified


  • Traction inverters
  • DC-DC converters
  • PV inverters
  • EV battery charging
  • Switch-mode power supplies
  • Power factor correction modules
  • Motor drives
  • Induction heating
  • IT Infrastructure
  • Solid-state relays and circuit breakers (-L8S models only)
  • Line rectification and active-bridge rectification circuits in AC/DC front-ends (-L8S models only)


Published: 2020-12-07 | Updated: 2023-08-21