Single-Event Latchup in a 7-nm Bulk FinFET Technology

Terrestrial neutron and alpha particle irradiation data for a 7-nm bulk FinFET technology reveal the persisting reliability threat single-event latchup (SEL) poses to advanced technology nodes. SEL is characterized over a wide range of supply voltages and temperatures for this technology node. SEL data is analyzed to determine the holding voltage ( V_{\mathrm {HOLD}} ) required to sustain SEL, which can be as low as 0.85 V at elevated temperatures. Such low SEL holding voltage within 100 mV of nominal supply voltage poses a major reliability threat.