Ceramic　capacitors　with　upper　operating　temperatures　far　beyond　200°C　are　essential　for　high-temperature　electronics　used　in　deep　oil　drilling,　aviation,　automotive　industry　and　so　on.　Recent　advances　in　existing　lead-free　dielectrics　for　potential　high-temperature　capacitor　applications　are　reviewed　and　grouped　into　three　categories　according　to　the　parent　component　of　the　solid　solution.　Their　desirable　temperature　stabilities　were　summarised　comprehensively.　However,　there　are　still　some　limitations　in　the　current　research,　such　as　achieving　low　loss　in　a　wide　temperature　range　and　maintaining　stable　dielectric　properties　with　different　frequencies　or　at　different　voltages.　Furthermore,　the　successful　implementation　of　multilayer　ceramic　capacitors　is　one　of　the　biggest　challenges,　which　will　have　far-reaching　impacts　on　the　realisation　of　high-temperature　capacitor　application　in　the　future.　©　2018　Institution　of　Engineering　and　Technology.　All　rights　reserved.