The growing use of advanced driver assistance system is boosting the demand for semiconductors in the automotive industry with rise in sales of discrete semiconductors such as
varistors, diodes, and thyristors.
Bourns' existing circuit protection portfolio includes gas discharge tubes, metal oxide
varistors, thyristor surge protectors, transient voltage suppressor diodes and arrays, Power TVS diodes, Polymer PTC resettable fuses, TBU High-Speed Protectors, mini-breaker thermal cutoff devices, and ESD suppressors.
Surge arresters, like any apparatus, can be damaged in operation, for example, due to internal breakdown of
varistors, which can lead to short circuit and electric arcs inside the case, a sharp increase in internal gas pressure from thermal decomposition of materials caused by an electric arc.
Most whole-house surge suppressors use MOV (metal oxide
varistors) components that absorb the electrical energy from the surge when it gets above a certain level (clamping voltage).
"It also protects against a multitude of other threats to ensure greater product reliability in the field." In addition, TDK is offering leaded disk
varistors, while AVX is offering ultralow capacitance versions.
In addition to protection devices such as GDTs (gas discharge tubes), metal oxide
varistors, and thermistors, TDK also offers EPCOS capacitors, inductors and chokes for LED lighting systems.
Sn[O.sub.2] is one of the frequently studied materials as a
varistor ceramic since it provides monophasic
varistors, unlike the ZnO polyphasic
varistors.
Sn[O.sub.2]
varistors are semiconducting ceramic devices, which possess nonlinear voltage-current characteristics due to their grain boundary effects formed commonly by sintering Sn[O.sub.2] powder with minor additives (impurity).