TMP63/TMP63-Q1 Linear Thermistors Texas Instruments TMP63/TMP63-Q1 Linear Thermistors offer linearity and consistent sensitivity across temperatures to enable simple and accurate methods for temperature conversion. The devices' low power consumption and a small thermal mass minimize the impact of self-heating. With built-in failsafe behavior at high temperatures and powerful immunity to environmental variation, these devices are designed for a long lifetime of high performance. The small size of the Texas Instruments TMP63/TMP63-Q1 also allows for close placement to heat sources and quick response times.