The **MHO365FAG-R** is a specific part number typically associated with **Micro-Hybrid Electronics**, a specialist in high-reliability components. This specific series belongs to their **NDIR (Non-Dispersive Infrared)** gas sensing technology components, specifically high-performance **IR emitters** or **detectors**. --- ## 1. Component Overview The MHO365FAG-R is a thermal infrared emitter designed for high-frequency pulsing, commonly used as the light source in gas analysis systems (CO2, CH4, CO, etc.). | Feature | Specification | | :--- | :--- | | **Component Type** | Thermal Infrared Emitter | | **Package Style** | TO-39 (with Reflector) | | **Technology** | Thin-film / MEMS based | | **Typical Use** | NDIR Gas Sensing | | **Manufacturer** | Micro-Hybrid | --- ## 2. Technical Characteristics These components are engineered to provide a stable, broadband infrared output that covers the absorption wavelengths of most industrial and medical gases. ### Key Specifications * **Wavelength Range:** Typically 2 to 20 µm (Broadband). * **Drive Mode:** Designed for pulsed operation (1 Hz to 100 Hz depending on the specific chip). * **Reflector ("-R"):** The "R" suffix indicates an integrated parabolic reflector, which collimates the IR beam, increasing the signal intensity at the detector. * **Efficiency:** High emissivity nearing black-body radiation characteristics. --- ## 3. Operational Pinout & Circuitry For a standard TO-39 NDIR emitter like the MHO365, the circuit requirements are as follows: ### Connectivity | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | Anode (+) | Positive Supply | | **Pin 2** | Cathode (-) | Negative/Ground | | **Case** | Ground | Usually connected to the metal housing for EMI shielding | ### Typical Driving Code Snippet (Conceptual) NDIR emitters are rarely driven with DC; they are pulsed to allow for synchronous detection and to prevent overheating. ```c // Example: Driving an IR Emitter at 10Hz with 50% duty cycle void loop() { digitalWrite(IR_EMITTER_PIN, HIGH); // Turn on Emitter delay(50); // Wait 50ms digitalWrite(IR_EMITTER_PIN, LOW); // Turn off Emitter delay(50); // Wait 50ms } ``` --- ## 4. Application Areas 1. **Medical:** Capnography (CO2 monitoring) and anesthesia gas monitoring. 2. **Industrial:** Refrigerant leak detection, flue gas analysis, and explosion protection (Methane detection). 3. **Environmental:** Monitoring greenhouse gases (CO2, N2O). ---