The HS-139RH is fabricated on our dielectrically isolated Rad Hard Silicon Gate (RSG) process, which provides an immunity to Single Event Latch-up and the capability of highly reliable performance in any radiation environment. Specifications for Rad Hard QML devices are controlled by the Defense Supply Center in Columbus (DSCC). The SMD numbers listed below must be used when ordering. Detailed Electrical Specifications for the HS-139RH are contained in SMD 5962-98613. A "hot-link" is provided on our homepage with instructions for downloading. www.intersil.com/spacedefense/newsafclasst.asp