Figure 3
From: Positive temperature coefficient thermistors based on carbon nanotube/polymer composites

Voltage-current responses of thermistors.
Comparison of (a) voltage-current curves, (b) hold current, (c) hold voltage and (d) hold power between the CNT/HDPE and CB/HDPE thermistors; (e) PTC effect mechanism revealing high heat dissipation of the CNT/HDPE thermistors and (f) comparison of hold current and hold voltage between various thermistors (some data from technical specification of commercial thermistors).