Are GaN FETs prone to small area overheating?

Characteristics of GaN FETs and ICs
1

Are GaN FETs prone to small area overheating; thermal runaway; aka Spirito Effect

2

Si MOSFETs can show this effect, GaN FETs perform well. Tests on GaN FETs’ Safe Operating Area shows they are not affected by this. See Section 3, page 11-12 of the Phase 12 Reliability Report