Epcos has added two series to its range of PTC thermistor chips. Available in case size 0603, they feature space savings of about 50% in comparison with predecessor series B59701* in case size 0805. The standard version B59601A0*A062 has been developed for temperatures from 75 to 135 °C in ten-degree steps. Maximum variation from rated temperature is ±5 °C. Resistance is 4.7 kΩ at the rated temperature. Series B59601A0*B062 is distinguished by a narrower tolerance of ±3 °C and is therefore suitable for applications requiring higher measurement precision.

Both series are characterized by a very steep R/T curve. If rated temperature is exceeded by 10 °C, resistance is at least 20 kΩ in the 75 and 85 °C types. All other types have a resistance of even 40 kΩ for the same temperature change.