Indoor air quality monitoring
A typical gas sensor is a “gas alarm” that detects gas leakage and notifies with alarm sound. In recent years, they have been used in various situations, such as monitoring air quality in cars, detecting refrigerant gas in air conditioners, and monitoring indoor VOCs by installing them in air purifiers.
Furthermore, it is expected gas sensors will expand into new applications, such as personal health management by checking alcohol and breath smell by installing them in smartphones and wearable devices, and home air quality management. As such, demand for gas sensors will continue to increase in the future.
Recently MEMS (Micro Electro Mechanical Systems) chips are increasingly used for Metal Oxide gas sensors, one of the main types of gas sensor. Since MEMS chips have made it possible to make the gas sensor smaller and thinner, it is necessary to change the package size accordingly.
Comparison of 1cent coin and 3.0mmSQ package
1<Sealing Option>
2<Flexible Cavity Design>
3<Ceramic Package>
4<2nd Assembly>
Metal CAN Package
Ceramic Package
From pin insertion assembly to reflow surface assembly
Smaller and thinner package designs by 3D pattern routing
Design proposal by customized package
Kyocera's ceramic packaging contributes to the expansion of gas sensor applications, such as automotive gas sensors, because ceramic offers less out gas and high heat resistance in high temperature environments. Also, high reliability of chip assembly is expected because our ceramics have CTE close to Si and high mechanical strength.Application example : Air conditioner / Air purifier(VOC sensor) / Alarm for gas leakage
*Analysis method : Continuous temperature rising GC-MS(60~310℃)
*Analysis was conducted by Kyocera
Ceramic is capable of applying fine hole (~Φ100µm). Therefore, these fine holes are resistant to water and dust.
Kyocera is currenting developing a Package / Lid with a fine hole design less than φ50um. Please kindly contact us for more information.
Singulated package is mounted on plastic tray
Singulated package is mounted on adhesive tape.
•Metal frame material : SUS
*MAT shipment is registered trademark of Kyocera Corporation
Array with V-Cut (Snap Line)
Flexible shipping option can be offered.
Please kindly consult us if there is request for shipping form.
NDIR Gas Sensors
NDIR gas sensors are mainly used for detecting CO₂. Kyocera offers ceramic packages for IR emitters and photodiodes. High reliability is expected due to less outgassing of CO₂ compared to organic material as well as high heat resistance. In addition, since vacuum sealing is possible, high sensitivity of the photodiode can be expected.
Electrochemical Gas Sensors
Electrochemical gas sensors leverage chemical reactions for applications requiring high sensing accuracy for CO, NOx, and other gases. Alumina, which is a ceramic material, has strong chemical resistance and less chemical reaction to acid and alkaline solutions. Therefore, ceramic packages is usable in Electrochemical gas sensors.
Other Gas Sensors
Ceramic packages can be used for various types of gas sensors such as hydrogen, oxygen, odor sensors, etc. Kyocera has an open tool product lineup, making it is possible to conduct evaluation without incurring tooling costs.
