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Ceramic Packages for NDIR Gas Sensors

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Non-dispersive infrared (NDIR) sensors use IR light sources to detect gases (mainly CO₂). NDIR gas sensors incorporate IR emitters as light sources, and photodiode IR receivers which detect gas using CO2's characteristic of absorbing IR of specific wavelengths. Kyocera offers ceramic packages for NDIR gas sensors that feature smaller, thinner dimensions and less outgassing.

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Case Study:
Ceramic Packages for NDIR Gas Sensors

Features

Minimal or no outgas

Ceramic packages allow smaller, thinner devices

Hermetic sealing

CTE closer to Si

Less Outgas

Package Outgas Comparison: Organic vs. Ceramic

Ceramic packages have less outgas compared to organic packages.

Miniaturization and Thinner Packages

• Design improvement: From pin insertion to surface mount assembly
• Smaller and thinner package designs using 3D circuit routing
• We propose custom package design solutions

Hermetic Sealing

Ceramic packages allow hermetic sealing and vacuum sealing, which are not possible with organic packages.

CTE Closer to Silicon (Si)

Due to differences in their coefficients of thermal expansion (CTE), sensor chips made of Si, the most common material, face a higher risk of failure due to thermal stress when packaged in organic materials or metals. Ceramics, in contrast, have CTE closer to that of Si, giving sensors packaged in ceramics higher reliability and lower risk of failure from thermal stress.