Infrared thermopile gas sensor
TO-46 Housing
High sensitivity NTC
NTC thermistor compensation
Fast response time
4.26 μm narrow bandpass filter
Infrared thermopile gas sensors measure the concentration of
carbon dioxide by detecting changes in the resistance of their internal
thermistor elements. The product is packaged in a TO-46 metal housing
with a window equipped with a narrow-bandpass filter specifically
selected for CO₂ gas detection. Inside, an infrared filter, thermistor,
and other electronic components are integrated, offering advantages such
as high reliability and high sensitivity.
To-46 housing
High sensitivity
NTC Thermistor Compensation
Fast response
4.26μm narrow bandpass filter
Parameter | Min. | Typ. | Max. | Unit | Conditions |
Chip size | 1.1×1.1 | mm2 | |||
Sensitive area | 0.35×0.35 | mm2 | |||
Thermopile resistance | 80 | 98 | 115 | KΩ | Temp=25℃ |
Noise voltage | 36±2 | nV/ Hz1/2 | Temp=25℃ | ||
NEP | 0.23 | nW/Hz1/2 | Blackbody=500K,1Hz@25℃ | ||
Responsivity | 134 | 164 | 194 | V/w | Blackbody=500K,1Hz@25℃ |
Temp. coefficient of resistance | 0.06 | %/℃ | Temp=25℃～ 75℃ | ||
Time constant | ≤ 13 | ms | |||
Specific detectivity | 1.51×108 | cmHz1/2/w | Blackbody=500K,1Hz@25℃ | ||
NTC Resistance | 100±3% | KΩ | 25℃ | ||
NTC β | 3950±1% | K | 25/50℃ | ||
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