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.

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%

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.