![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
3. PTC thermistors
3.1 Conductivity origin
PTC thermistors are ferroelectric, semiconducting ceramics. They exhibit an "anomaly" in the variation of their resistance at the Curie temperature T C of the material corresponding to the ferro-para-electric transition temperature. Above this temperature (see figure 2 ), resistance rises sharply (in the order of 10 to 100% / °C), then reaches a maximum before decreasing. In other words, the thermistor changes from a conductive to an insulating state within a few tens of degrees: it behaves like a fuse with automatic...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Functional materials - Bio-based materials
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
PTC thermistors
Bibliography
NTC thermistors
Directory
List of industrial manufacturers worldwide (non-exhaustive list) L
Betatherm http://www.betatherm.com/
Epcos http://www.epcos.com/
Murata http://www.murata.com/
...Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference