Barium titanate's great significance is expressed in its applications, which include ceramic capacitors, PTCR thermistors (positive temperature coefficient resistors/thermistors, or
posistors), piezoelectric sensors, optoelectronic devices, transducers, and actuators.
Disc, multilayer, microwave and trimmer capacitors, RF microwave filters, resistor networks, potentiometers, piezo alarms, RFI/EMI filters, resonators, oscillators, flyback transformers,
posistors, sensors and associated electronic components.