Thermal - How do I determine the temperature from the Luminus on board thermistor?

For Luminus core board devices, a thermistor is mounted on board to accurately determine the temp of the board to accurately determine the temperature of the die in-situ. The on-board thermistor is sourced from Murata Manufacturing Company.

For all Luminus devices which include a Thermistor, the following link opens a window to an online thermistor calculator.

Luminus Thermistor Calculator

By adjusting the slider (as seen below), the readout will show the calculated temperature.

The dropbox in the right lets you select the thermistor that is on board which will vary from device to device. Please refer to the appropriate product datasheet to correctly determine which thermistor is utilized. At this time, the calibration curve for the two thermistors Luminus uses is the same. The pulldown is there for future expansion. You can read the resistance of the thermistor using an Ohmmeter.

(Preview of the Luminus Thermistor Calculator)

Note: The NCP18XH103J03RB and the NCP15XH103J03RC utilize the same Resistance Vs. Temperature Curve

Typically, these thermistors have a tolerance of ±5% and/or +/-2°C in the temperature range of −40°C to +125°C.

For further reading on Murata thermistors and their use/handling, please find the following link

Murata Thermistor Application Note

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Luminus Product Information (datasheets): https://www.luminus.com/products

Luminus Design Support (ray files, calculators, ecosystem items: [power supplies, lenses, heatsinks]): https://www.luminus.com/resources

Luminus Product Information sorted by Applications:  https://www.luminus.com/applications

Where to buy Samples of Luminus LEDs: https://www.luminus.com/contact/wheretobuy.

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