SOA is an indicator of the device’s ability to transfer heat away from a resistive junction. The more efficient a device is at getting rid of generated heat, the lower thermal resistance and the better the SOA performance.
EPC’s eGaN FETs have many major advantages compared with the power MOSFET needed for today’s high performance applications. eGaN FET’s offer superior device on-resistance while its positive temperature coefficients inhibit hot spot generation within the die, resulting in superior Safe Operating Area capabilities.
An application note presenting the Safe Operating Area for EPC eGaN FETs is available at: http://epc-co.com/epc/documents/product-training/SafeOperatingArea.pdf Additionally, EPC is in the process of updating each of its product data sheets to include SOA performance curves.