JT Thermistor (high accuracy, film type)

The JT series thermistor features a thickness of less than 500 μm and can be installed in spaces as thin as a credit card. The JT thermistors also have excellent electrical insulation and can be safely used in environments where they might come in contact with electrodes. The JT-W series thermistor  is a very small thin-film temperature sensor  with a minimum length of 11.5 mm and a max. thickness of 600 μm. SEMITEC’S JT thermistors are fully compliant with RoHS DIRECTIVE2011/65/EU.



Battery packs, IT equipment, mobile devices, LCDs, surface temperature sensors, high sensitivity air temperature sensors

Part number



Part No. R251 R25Tolerance B-value2 Dissipation factor
Thermal time constant s3 Rated power
mW at 25℃
Operating Temperature range
    103JT     10.0kΩ ±1%
3435K±1% approx. 0.7 approx. 5 3.5 −50〜+125
104JT 100kΩ 4390K±1%
103JT-W 10.0kΩ 3435K±1% approx. 1.4 approx. 3.4 −50〜+90

1 Rated zero-power resistance at 25℃
2 B-value determined by rated zero-power resistance at 25℃ and 85℃
3 Time required to reach 63.2% of temperature difference. Measured in still air.