The data from Table 3-1 shows that although the temperature measured from the heat sink and ring lugs are quite similar (agree within 1°C to 2°C), the temperature information from the thermistors is not accurate to the same level. The temperature measurement of the TMP6 is approximately 5°C error from the measured ring lug temperature and ultimately 7°C error from the temperature measurement of the heat sink. The NTC reported temperature is less accurate, with 12°C error from the ring lug temperature and 14°C error from the temperature measurement of the heat sink. When comparing the reported temperature information from both the TMP6 and NTC, the TMP6 is 7°C more accurate than the NTC.

Although both the TMP6 and NTCALUG01A103FLA are specified as 1% tolerant thermistors, there can be a few reasons for the differences in temperature accuracy. The two main factors for temperature accuracy when using a ring lug configured thermistor are the ring lug itself and thermal epoxy used within the ring lug to conduct heat to the thermistor sensor. To control the test conditions and have a similar condition for both ring lug style thermistors, the same ring lug is used for both the NTC and TMP6. The only significant difference between the two ring lug style thermistors is the thermally conductive epoxy used. The thermally conductive epoxy is considered to be the biggest factor for differences in temperature accuracy.