There is another driver. Automotive manufacturers are now demanding that devices meet pulse tests in accordance with ISO 7637-2:2011, the standard that defines robustness against transients along the power supply bus. At the behest of a major Tier 1 supplier to the EV industry, Nexperia’s 80 V RETs have been tested and can withstand the required 20 V across a base-emitter junction. This is vital for 24 V systems in trucks and lorries, as well as 48 V automotive systems.