IR's 40V Automotive-Qualified COOLiRFET Deliver Benchmark On-State ... Autochannel (press release) EL SEGUNDO, Calif.--May 14, 2013: International Rectifier, IR , a world leader in power management technology, today introduced a family of automotive-qualified COOLiRFET MOSFETs delivering benchmark on-state resistance (Rds(on)) for heavy load ...