Jim Colby @ edn-europe.com discuss how to protect your circuits on automotive enviroment:
Along with the ever increasing drive for improved gas mileage, automobile manufacturers are striving to make their vehicles safer with each new design iteration. The safety features that are now available or standard on most vehicles, such as airbags, backup cameras, collision avoidance systems, and tire pressure sensors, have all drastically improved vehicle safety. The protections offered by these systems are obvious. But, there are also many unseen technologies that offer additional protection for the electronics systems in today’s vehicles.
As vehicles have become safer, so has the electronic circuitry that helps provide that safety. The advanced chipsets that are used in vehicles today are subjected to countless electrical hazards that are commonplace in the harsh automotive environment. Typical automotive electrical hazards or transients include lightning, electrostatic discharge (ESD) and switching loads in power electronics circuits.
Protection Methods for Automotive Electronics Circuits – [Link]