Thermopile Sensor MRT-311S

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MRT-311S thermopile sensor is based on MEMS technology, consists of hundreds of thermocouples connected in series. Using Seebeck principle, when there is a temperature difference between the target and the environment, the sensor gives the corresponding voltage output, therefore detecting the existence of the target or the temperature of the target.


* TO-46 metal package
* High sensitivity
* Quick response, Good stability
* High filter transmittance
* High precision NTC

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Forehead Thermometer

Due to the impact of the Covid epidemic, household body temperature products have been widely used. The forehead thermometer has ushered in vigorous development under the background of epidemic. At present, the shortage of infrared thermometers is about 60,000 units, and the shortage of handheld infrared thermometers is about 550,000 units in Chinese market. There is a great challenge for infrared temperature sensor companies, and it is also an explosive opportunity.


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Specification Product Size

Technical Data Sheet

Parameter Value Unit Remarks
Chip size 1.1×1.1  mm /
Field of view 95 Degree Above 50%
Thermopile resistor 90±30 KΩ  25℃
Noise voltage 38 nV/Hz1/2 25℃
Noise equivalent power 0.23 nW/Hz1/2  500K, 1Hz, 25℃
Response rate 160±40 V/W 500K, 1Hz, 25℃
Temperature coefficient of resistance 0.06 %/℃ 25℃~75℃
Time constant ≤13 ms  
Detection rate 1.5 ×10 cmHz1/2/W  500K, 1Hz, 25℃
NTC resistance 100 ± 1% 25℃
NTC(β) 3950 ± 1% / 25℃/50℃
Working temperature -30 ~125℃    


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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


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