The device requirements for industrial and automotive applications are different and must be addressed in different manner. While the requirements for automotive applications are the most difficult to comply with, industrial requirements traditionally allow more latitudes. Relay coil currents vary considerably depending on the applications. The largest class of industrial and automotive relays have coils with current consumption between 50 and 150 mA. Selection of a suitable relay driver requires many constraints to be evaluated. For automotive applications, it is necessary to put special attention in the following requirements: