The MPY20-A112T series pyroelectric sensors utilize lithium tantalate single crystals as the sensing element. Lithium tantalate crystals have a Curie temperature above 600℃, a low relative permittivity, and a high detectivity. Over a wide room temperature range, the pyroelectric coefficient of the material changes very little with temperature, with a temperature change rate of only 1-2‰ for the output signal. The sensor exhibits excellent temperature stability and good spectral response consistency across the 1~20μm wavelength range. The sensor integrates dual-channel detection, voltage mode, TO-39 packaging, and thermal compensation technology, making it suitable for gas detection needs in various fields such as medical, industrial, and consumer electronics, providing a high-performance sensing solution for non-contact gas analysis.
I. Core Technical Features
1. Lithium Tantalate (
LiTaO3) Sensor: High Stability and Wide Spectral Response
The sensor utilizes single-crystal lithium tantalate material, possessing both high temperature stability (output signal temperature change rate 1-2‰) and a wide spectral response range (1~20μm). This allows it to adapt to gas detection needs in complex environments, ensuring signal accuracy during long-term operation.
2. Dual-Channel Design: Precise Multi-Gas Identification
It incorporates two detection channels, Channel 1 (Reference) and Channel 2 (Measure), paired with filters of different center wavelengths (e.g., 3.95μm/3.30μm for CH4 detection, 3.95μm/4.26μm for CO2 detection, etc.). This allows for the targeted identification of multiple gases such as CH4, CO2, N2O, CO, and NO2, achieving high-precision gas concentration analysis.
3. TO-39 Package and Thermal Compensation: Strong Environmental Adaptability
Utilizing a TO-39 metal package, it provides excellent electromagnetic shielding and mechanical protection, and is suitable for a wide operating temperature range of -40°C to +120°C. Integrated thermal compensation technology effectively offsets the impact of ambient temperature fluctuations on test results, ensuring measurement reliability under extreme conditions.
4. JFET and Voltage Mode: Simplified System Integration
It features a built-in JFET (Junction Field-Effect Transistor) signal processing unit, supporting voltage mode output. No complex external circuitry is required; it can be directly connected to a microcontroller, reducing system integration difficulty and improving development efficiency.
II. Core Technical Parameter Table
III. Filter Selection and Multi-Gas Compatibility
The MPY20-A112T can be adapted to various gas detection needs by changing the filter combination. Typical models and corresponding parameters are as follows:
IV. Recommended Application Scenarios
1. Medical Industry
Suitable for anesthetic gas monitoring (e.g., N2O) and respiratory gas analysis (e.g., CO2), high-precision detection ensures surgical safety and patient vital sign monitoring.
2. Safety Industry
Integrated into gas leak alarms (CH4) and toxic gas detectors (CO, NO2), enabling rapid response to potential hazards and ensuring safety in public and industrial locations.
3. Home Electronics
Used in smart home appliances (e.g., air conditioner CO2 concentration detection) and air purifiers (VOCs monitoring), improving home environment comfort and health management.
4. Industrial Production
Adapted to industrial waste gas emission monitoring (SO2, NO2) and process control (e.g., SF6 gas leak detection), meeting environmental regulations and production safety requirements.
MFrontier focuses on the R&D of MEMS sensor chips and modules, using its proprietary thermopile and pyroelectric technologies as the core to provide high-precision sensing solutions to global customers. The MPY20-A112T, with its high stability, multi-gas compatibility, and simplified integration, aims to become a core sensing component in the gas detection field, contributing to the upgrading of smart hardware and industrial automation.
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