A gate controlled lateral PNP bipolar device has been designed in a commerc
ial BiCMOS process to investigate its sensitivity to radiation-induced degr
adation. New experimental and simulated results concerning total dose effec
ts are presented. The improved radiation hardness of this device working in
its accumulation mode is shown. The influence of the gate potential during
irradiation is studied as well as the effect of the gate potential on the
degraded current characteristics.