Epcos b57164k series leaded ntc thermistor 5mm lead spacing epcos b57164k333j this 33k 5 disc type ntc thermistor has 5mm lead spacing and is designed for temperature measurement and compensation in a wide range of applications such as inrush current limiters temperature sensors self resetting overcurrent protectors self regulating heating elements modern digital thermostats and for monitoring charging battery packs epcos b57164k333j 33k 5 125c ntc thermistor k164 series