Maximum voltage: for NTC thermistor, it refers to the maximum DC voltage allowed to be continuously applied at the specified ambient temperature without causing the thermistor to cause thermal runaway; For a PTC thermistor, it is the maximum DC voltage that is allowed to be continuously applied to the thermistor at a specified ambient temperature and in still air to ensure that the thermistor is operating properly in the PTC characteristic part.
Maximum operating temperature Tmax: under the specified technical conditions, the maximum temperature allowed for long-term continuous operation of the thermistor.