The trend of electric or hybrid electric vehicles has accelerated the introduction of electronic components into cars. The components residing under the hood will experience high ambient temperatures in excess of +105°C. While some products are able to meet electrical specifications up to +125°C, they cannot be conveniently assumed to be suitable for automotive applications. Here, we take a look at what goes into an automotive grade optocoupler beyond meeting high temperature electrical specifications. As part of the R2Coupler family, Avago Technologies’ automotive grade optocouplers were designed and qualified to meet these stringent standards.