This technical article written by Ron Demcko, KYOCERA AVX discusses ESD suppression methods using multilayer MLCC ceramic capacitors or MLV varistors and provide its selection guide for automotive applications.
• The use of these contactors allows the capacitors to be connected quickly and without starting transients since the connection occurs when the voltage crosses zero. • As in the case of the connection, the disconnection is carried out without transients as it occurs in the downward passage through zero of the current.
So, assuming that the most common ECUs have 300 pins, that means a 240:60 ratio of integration capacitors to MLVs. Electrostatic discharge (ESD) is a sub-nanosecond rise-time event that is generated by the charge transfer of materials in the tribo-electric material series.